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Author : Herbert Julius Wagner,Albert M. Hall
Publisher : Unknown
Page : 36 pages
File Size : 48,9 Mb
Release : 1965
Category : Nickel alloys
ISBN : UOM:39015095155217
Author : E. A. Loria
Publisher : Unknown
Page : 760 pages
File Size : 53,7 Mb
Release : 1989
Category : Technology & Engineering
ISBN : STANFORD:36105030032895
Author : Evan Robert Petty
Publisher : Unknown
Page : 326 pages
File Size : 49,8 Mb
Release : 1970
Category : Technology & Engineering
ISBN : WISC:89038842175
Author : S.G.K. Manikandan,D. Sivakumar,M. Kamaraj
Publisher : Elsevier
Page : 322 pages
File Size : 47,7 Mb
Release : 2019-05-29
Category : Technology & Engineering
ISBN : 9780128181836
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
Author : Robert Harry Heyer
Publisher : Unknown
Page : 574 pages
File Size : 54,7 Mb
Release : 1944
Category : Alloys
ISBN : UIUC:30112070439242
Author : Donald Sherman Clark,Wilbur Richmond Varney
Publisher : Van Nostrand Reinhold Company
Page : 682 pages
File Size : 41,5 Mb
Release : 1962
Category : Technology & Engineering
ISBN : UOM:39015000499882
Author : H. D. Hanes,Stanley W. Porembka,J. B. Melehan,P. J. Gripshover
Publisher : Unknown
Page : 56 pages
File Size : 40,6 Mb
Release : 1966
Category : Beryllium
ISBN : UOM:39015095158518
This report summarizes the recent work done to more fully understand the physical metallurgy of beryllium. A review of work on purification of beryllium, which has yielded high-quality single crystals, was made. The basic deformation properties of beryllium have thus been more clearly defined. The effects of certain alloying elements and impurities are also discussed. Deformation modes in polycrystalline beryllium are discussed based on the results of studies of single crystals. The texture developed in polycrystalline beryllium by fabrication and resulting effects on mechanical properties are dealt with, as well as fracture modes in single-crystal and polycrystalline beryllium. Bend-plane splitting is the method suggested for initiation of fracture in beryllium. Some effects of the distribution of impurities as a result of thermal treatment on the mechanical properties are cited. Since grain size is an important factor in determining properties, recrystallization and grain-growth phenomena are covered. The physical-metallurgical phenomena which contribute to the properties and fabricability of commercial products are discussed. (Author).
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 : Springer
Page : 1118 pages
File Size : 48,5 Mb
Release : 2018-05-12
Category : Technology & Engineering
ISBN : 9783319894805
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.
Author : Raymond Aurelius Higgins
Publisher : Unknown
Page : 580 pages
File Size : 42,6 Mb
Release : 1983
Category : Technology & Engineering
ISBN : PSU:000043836871
Author : Dunyong Deng
Publisher : Linköping University Electronic Press
Page : 69 pages
File Size : 53,8 Mb
Release : 2018-01-24
Category : Electronic
ISBN : 9789176853832
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.
Author : C. H. Lund
Publisher : Unknown
Page : 54 pages
File Size : 40,8 Mb
Release : 1961
Category : Heat resistant alloys
ISBN : UOM:39015095151174
Author : Anonim
Publisher : Unknown
Page : 1216 pages
File Size : 46,8 Mb
Release : 1976-06
Category : Nuclear energy
ISBN : PSU:000047758964
Author : George Sachs,Kent Robertson Van Horn
Publisher : Unknown
Page : 600 pages
File Size : 40,9 Mb
Release : 1940
Category : Technology & Engineering
ISBN : UCAL:$B580320
Author : Michael C. Gao,Jien-Wei Yeh,Peter K. Liaw,Yong Zhang
Publisher : Springer
Page : 516 pages
File Size : 54,9 Mb
Release : 2016-04-27
Category : Technology & Engineering
ISBN : 9783319270135
This book provides a systematic and comprehensive description of high-entropy alloys (HEAs). The authors summarize key properties of HEAs from the perspective of both fundamental understanding and applications, which are supported by in-depth analyses. The book also contains computational modeling in tackling HEAs, which help elucidate the formation mechanisms and properties of HEAs from various length and time scales.
Author : I︠U︡riĭ Mikhaĭlovich Lakhtin
Publisher : Unknown
Page : 490 pages
File Size : 40,9 Mb
Release : 1965
Category : Physical metallurgy
ISBN : UOM:39015000998818
