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Welding the Inconel 718 Superalloy

Welding the Inconel 718 Superalloy
  • Author : S.G.K. Manikandan,D. Sivakumar,M. Kamaraj
  • Publisher :Unknown
  • Release Date :2019-05-29
  • Total pages :322
  • ISBN : 9780128181836
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Summary : Welding the Inconel 718 Superalloy: Reduction of Micro-segregation and Laves Phases explores the day-to-day welding business in Alloy 718 and presents solutions to avoid or minimize micro-segregation. It considers the limitations of changing from lab scale models to actual production models and presents new technologies with proven experimental background. Various case studies are presented within the text, as well as proposed solutions backed by experimental evidence. Items previewed in this edition include enhanced cooling rates in the GTA welding process with cryogenic cooling and enhanced dendrite refinement using modified pulse waveform. This work will be useful to researchers from the aerospace, space, power generation, nuclear, and chemical industries, as well as students interested in superalloys and welding. Resolves the industrial limitations in reducing the formation of laves phases in the welding of alloy 718 Presents case studies in industrial applications Discusses new technologies with proven experimental background Includes a comparison of laves size and distribution between GTAW, EBW, LBW and FW

Fiber Laser Welding of Nickel-based Superalloy Inconel 718

Fiber Laser Welding of Nickel-based Superalloy Inconel 718
  • Author : Omudhohwo Emaruke Oshobe
  • Publisher :Unknown
  • Release Date :2012
  • Total pages :302
  • ISBN : OCLC:855382690
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Summary : Fiber laser welding -- liquation cracking -- Inconel 718 -- intergranular segregation -- nickel superalloy -- welding parameters -- process instabilty -- heat treatment -- repair welding -- grain size.

Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives: Energy, Aerospace, and Industrial Applications

Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives: Energy, Aerospace, and Industrial Applications
  • Author : Eric Ott,Xingbo Liu,Joel Andersson,Zhongnan Bi,Kevin Bockenstedt,Ian Dempster,Jon Groh,Karl Heck,Paul Jablonski,Max Kaplan,Daisuke Nagahama,Chantal Sudbrack
  • Publisher :Unknown
  • Release Date :2018-05-12
  • Total pages :1118
  • ISBN : 9783319894805
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Summary : This technical meeting will focus on Alloy 718 and Superalloys in this class relative to alloy and process development, production, product applications, trends and the development of advanced modeling tools. The symposium provides an opportunity for authors to present technical advancements relative to a broad spectrum of areas while assessing their impact on related fields associated with this critical alloy group. There are continuing innovations relative to these alloys as well as novel processing techniques which continue to extend applications in very challenging environments ranging from corrosion resistance in the deep sea to high-stressed space applications.

Alloy Design and Process Innovations

Alloy Design and Process Innovations
  • Author : Prashanth Konda Gokuldoss,Zhi Wang
  • Publisher :Unknown
  • Release Date :2020-04-15
  • Total pages :372
  • ISBN : 9783039283521
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Summary : Additive manufacturing (AM) is one of the manufacturing processes that warrants the attention of industrialists, researchers and scientists, because of its ability to produce materials with a complex shape without theoretical restrictions and with added functionalities. There are several advantages to employing additive manufacturing as the primary additive manufacturing process. However, there exist several challenges that need to be addressed systematically. A couple such issues are alloy design and process development. Traditionally alloys designed for conventional cast/powder metallurgical processes were fabricated using advanced AM processes. This is the wrong approach considering that the alloys should be coined based on the process characteristics and meta-stable nature of the process. Hence, we must focus on alloy design and development for AM that suits the AM processes. The AM processes, however, improve almost every day, either in terms of processing capabilities or processing conditions. Hence, the processing part warrants a section that is devoted to these advancements and innovations. Accordingly, the present Special Issue (book) focuses on two aspects of alloy development and process innovations. Here, 45 articles are presented covering different AM processes including selective laser melting, electron beam melting, laser cladding, direct metal laser sintering, ultrasonic consolidation, wire arc additive manufacturing, and hybrid manufacturing. I believe that this Special Issue bears is vital to the field of AM and will be a valuable addition.

Advances in Computational Methods in Manufacturing

Advances in Computational Methods in Manufacturing
  • Author : R. Ganesh Narayanan,Shrikrishna N. Joshi,Uday Shanker Dixit
  • Publisher :Unknown
  • Release Date :2019-10-17
  • Total pages :1092
  • ISBN : 9789813290723
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Summary : This volume presents a selection of papers from the 2nd International Conference on Computational Methods in Manufacturing (ICCMM 2019). The papers cover the recent advances in computational methods for simulating various manufacturing processes like machining, laser welding, laser bending, strip rolling, surface characterization and measurement. Articles in this volume discuss both the development of new methods and the application and efficacy of existing computational methods in manufacturing sector. This volume will be of interest to researchers in both industry and academia working on computational methods in manufacturing.

Welding Metallurgy and Weldability of Nickel-Base Alloys

Welding Metallurgy and Weldability of Nickel-Base Alloys
  • Author : John C. Lippold,Samuel D. Kiser,John N. DuPont
  • Publisher :Unknown
  • Release Date :2011-09-20
  • Total pages :456
  • ISBN : 9781118210031
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Summary : The most up-to-date coverage of welding metallurgy aspects and weldability issues associated with Ni-base alloys Welding Metallurgy and Weldability of Nickel-Base Alloys describes the fundamental metallurgical principles that control the microstructure and properties of welded Ni-base alloys. It serves as a practical how-to guide that enables engineers to select the proper alloys, filler metals, heat treatments, and welding conditions to ensure that failures are avoided during fabrication and service. Chapter coverage includes: Alloying additions, phase diagrams, and phase stability Solid-solution strengthened Ni-base alloys Precipitation strengthened Ni-base alloys Oxide dispersion strengthened alloys and nickel aluminides Repair welding of Ni-base alloys Dissimilar welding Weldability testing High-chromium alloys used in nuclear power applications With its excellent balance between the fundamentals and practical problem solving, the book serves as an ideal reference for scientists, engineers, and technicians, as well as a textbook for undergraduate and graduate courses in welding metallurgy.

Weld Integrity and Performance

Weld Integrity and Performance
  • Author : Steve Lampman,ASM International
  • Publisher :Unknown
  • Release Date :1997-01-01
  • Total pages :417
  • ISBN : 1615032045
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Summary : Key articles from over 10 separate ASM publications are brought together as a practical reference on weld integrity crack prevention. This book thoroughly covers the essentials of weld solidification and cracking, weldability and material selection, process control and heat treatment, failure analysis, and fatigue and fracture mechanics weldments. Contents also include an appendix for quick reference of tabular data on weldability of alloys, process selection, recommended interpass and heat treatment temperatures, and qualification codes and standards.

Additively Manufactured Inconel 718

Additively Manufactured Inconel 718
  • Author : Dunyong Deng
  • Publisher :Unknown
  • Release Date :2018-01-24
  • Total pages :69
  • ISBN : 9789176853832
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Summary : Additive manufacturing (AM), also known as 3D printing, has gained significant interest in aerospace, energy, automotive and medical industries due to its capabilities of manufacturing components that are either prohibitively costly or impossible to manufacture by conventional processes. Among the various additive manufacturing processes for metallic components, electron beam melting (EBM) and selective laser melting (SLM) are two of the most widely used powder bed based processes, and have shown great potential for manufacturing high-end critical components, such as turbine blades and customized medical implants. The futures of the EBM and SLM are doubtlessly promising, but to fully realize their potentials there are still many challenges to overcome. Inconel 718 (IN718) is a nickel-base superalloy and has impressive combination of good mechanical properties and low cost. Though IN718 is being mostly used as a turbine disk material now, the initial introduction of IN718 was to overcome the poor weldability of superalloys in 1960s, since sluggish precipitation of strengthening phases ?’/?’’ enables good resistance to strain-age cracking during welding or post weld heat treatment. Given the similarity between AM and welding processes, IN718 has been widely applied to the metallic AM field to facilitate the understandings of process-microstructure-property relationships. The work presented in this licentiate thesis aims to better understand microstructures and mechanical properties EBM and SLM IN718, which have not been systematically investigated. Microstructures of EBM and SLM IN718 have been characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM) and correlated with the process conditions. Monotonic mechanical properties (e.g., Vickers microhardness and tensile properties) have also been measured and rationalized with regards to the microstructure evolutions before and after heat treatments. For EBM IN718, the results show the microstructure is not homogeneous but dependant on the location in the components, and the anisotropic mechanical properties are probably attributed to alignment of porosities rather than texture. Post heat treatment can slightly increase the mechanical strength compared to the as-manufactured condition but does not alter the anisotropy. SLM IN718 shows significantly different microstructure and mechanical properties to EBM IN718. The as-manufactured SLM IN718 has very fine dendritic microstructure and Laves phases in the interdendrites, and is “work-hardened” by the residual strains and dislocations present in the material. Mechanical properties are different between horizontally and vertically built samples, and heat treatment can minimize this difference. Results from this licentiate thesis provide the basis for the further research on the cyclic mechanical properties of EBM and SLM IN718, which would be the focus of following phase of the Ph.D. research.

Superalloys for Industry Applications

Superalloys for Industry Applications
  • Author : Sinem Cevik
  • Publisher :Unknown
  • Release Date :2018-08-01
  • Total pages :118
  • ISBN : 9781789235388
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Summary : In recent years, superalloys have been widespread usage in aerospace gas turbine engine parts. The main reason of it is that these materials have high yield, ultimate tensile strength, and very good corrosion/oxidation resistance, and they combine these good properties with an excellent creep resistance at elevated temperatures. In spite of their outstanding properties, superalloys can lose their mechanical strength because of wear, tear, and crack formation when they are exposed to high-service temperatures and heavy working conditions. Moreover, corrosion is another important issue for superalloys because the materials of gas turbine engine parts are exposed to harsh engine environments, which consist of many pollutants and hot gases. Therefore, special attention must be given to the corrosion behavior of superalloys. This book provides information on the interaction between the microstructure of alloys and their mechanical properties and also the position of superalloys in the manufacturing industry. Topics cover the minimization of the formation of microsegregation and detrimental phases in the GTA welding of superalloys, oxidation kinetics of nickel-based superalloys used in the manufacture of rings for aircraft engines, a review of the work done over the last two decades to understand the hot corrosion behavior of superalloys used in advanced coal-based power plants, ultrasonic-assisted machining of Inconel 718, dry high-speed turning of Ti-6Al-4V titanium alloy, and laser welding in dentistry. The book "Superalloys for Industry Applications" consists of contributions by scientists and engineers who are experienced in the production, design, and analysis of materials from all around the world. We hope that this book will be an irreplaceable source of study for manufacturing, degradation mechanisms, and reliability of superalloys.

Advanced Welding Processes

Advanced Welding Processes
  • Author : J Norrish
  • Publisher :Unknown
  • Release Date :2006-10-11
  • Total pages :304
  • ISBN : 9781845691707
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Summary : Advanced welding processes provides an excellent introductory review of the range of welding technologies available to the structural and mechanical engineer. The book begins by discussing general topics such power sources, filler materials and gases used in advanced welding. A central group of chapters then assesses the main welding techniques: gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), high energy density processes and narrow-gap welding techniques. Two final chapters review process control, automation and robotics. Advanced welding processes is an invaluable guide to selecting the best welding technology for mechanical and structural engineers. An essential guide to selecting the best welding technology for mechanical and structural engineers Provides an excellent introductory review of welding technologies Topics include gas metal arc welding, laser welding and narrow gap welding methods

Superalloy 718

Superalloy 718
  • Author : E. A. Loria,ASM International
  • Publisher :Unknown
  • Release Date :1989
  • Total pages :696
  • ISBN : STANFORD:36105030032895
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Summary :

The Effects of Multiple Repairs on Inconel 718 Weld Mechanical Properties

The Effects of Multiple Repairs on Inconel 718 Weld Mechanical Properties
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1991
  • Total pages :33
  • ISBN : NASA:31769000592702
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Summary :

Crack-growth Behavior in Thick Welded Plates of Inconel 718 at Room and Cryogenic Temperatures

Crack-growth Behavior in Thick Welded Plates of Inconel 718 at Room and Cryogenic Temperatures
  • Author : Royce G. Forman
  • Publisher :Unknown
  • Release Date :1974
  • Total pages :41
  • ISBN : UIUC:30112106886028
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Summary :

Welding Journal

Welding Journal
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2009
  • Total pages :229
  • ISBN : UCSD:31822035999283
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Summary :

Chemical Abstracts

Chemical Abstracts
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2002
  • Total pages :229
  • ISBN : UOM:39015057323951
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Summary :

Functional Materials Research II

Functional Materials Research II
  • Author : Linqing Luo,Gui Chun Huang
  • Publisher :Unknown
  • Release Date :2017-01-20
  • Total pages :1132
  • ISBN : 9783035730524
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Summary : Selected, peer reviewed papers from the 2016 China Functional Material Technology and Industry Forum, July, 25-28, 2016, Chongqing, China

International Journal of Materials & Product Technology

International Journal of Materials & Product Technology
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1998
  • Total pages :229
  • ISBN : UOM:39015048120698
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Summary :

Methods of High-alloy Weldability Evaluation

Methods of High-alloy Weldability Evaluation
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1970
  • Total pages :51
  • ISBN : WISC:89046324125
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Summary :

A Feasibility Study of "cold Metal Transfer"-gas Metal Arc Welding (CMT-GMAW) Nickel Base Superalloy Inconel 718

A Feasibility Study of 'cold Metal Transfer'-gas Metal Arc Welding (CMT-GMAW) Nickel Base Superalloy Inconel 718
  • Author : Timothy Patrick Hasselberg
  • Publisher :Unknown
  • Release Date :2009
  • Total pages :229
  • ISBN : OCLC:429073546
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Summary :

Journal de physique

Journal de physique
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2004
  • Total pages :229
  • ISBN : UOM:39015059092257
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Summary :

Welding Research Abroad

Welding Research Abroad
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2002
  • Total pages :229
  • ISBN : UOM:39015047911352
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Summary :