Download or read book The Effect of Welding Procedure on the Composition of the Weld Metal and the Mechanical Strength of the Welded Joint written by Douglas G. Ludlam and published by . This book was released on 1933 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Material and GMAW Process Conditions on AHSS Welds written by Ryan Nicholas Kapustka and published by . This book was released on 2006 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The drive to reduce vehicle weight while improving crash performance has led automotive and heavy equipment manufacturers to introduce new materials with greater strength-to-weight ratios. Advanced high strength Steel (AHSS) is a family of several types of steels which derive their strengths from various combinations of chemistry and mechanical processing. Fundamental work is needed to understand how material and process conditions affect the properties of Gas Metal Arc (GMA) welded joints in these materials. The objective of this work was to characterize the effects of material pre-strain, cooling-rate (welding heat-input and fixture heat-sinking), filler-metal selection, dilution, and post-baking on the microstructure and mechanical properties of GMA -- welded DP and TRIP sheet-metal lap-joints and butt-joints. Four steels were studied: coated DP780, DP980, TRIP600, and TRIP78O of thicknesses ranging from 1.34 to 1.54mm. Heat- affected zone (HAZ) and fusion-zone (FZ) hardness profiles and microstructures were characterized for lap-joint fillet welds. Static and dynamic tensile properties of DP780 and TRIP78O butt and lap-joints were evaluated and related to the microstructral observations. The peak HAZ hardness and the degree of HAZ softening were related to the grade of the material. No softening was observed in the TRIP600 welds, which was attributed to the higher silicon content of this material retarding the rate of carbide tempering during the weld thermal-cycle. The relatively high aluminum content of the TRIP78O allowed retained ferrite to be present in all regions of the HAZ, along with a continuous region of coarse ferrite along the weld fusion line. This resulted in the TRJP78O having a lower peak HAZ hardness than the DP780. The DP980 had the greatest peak HAZ hardness and the highest degree of HAZ softening, which was attributed to its higher hardenability and martensite content. The minimum HAZ hardness of welds produced on the pre-strained materials remained greater than that of the as-received base material. Regardless of the presence of pre-strain, post-baking did not have an effect on HAZ hardness. The FZ microstructure and corresponding hardness was found to be largely influenced by dilution and the aluminum or silicon content of the base material. The high aluminum content of TRIP78O promoted the formation of harder constituents in the weld metal, whereas, the high silicon content of TRTP600 promoted the formation of a softer ferritic microstructure. All of the TRIP78O and DP780 butt-joints failed in the softened region of the HAZ during the static and dynamic tensile tests. For the static butt-joints, joint efficiencies were in the range of 87 -- 94%, while elongation recovery values ranged from 67-- 80%. The dynamic butt-joints had peak loads in the range of 122.5 -- 130 KSI, and strains at peak load ranged from 2.25 -- 3.85%. Similar values were obtained for the TRIP78O lap-joints without porosity along the root of the weld. However, when porosity was present along the weld root, static and dynamic tensile properties were dramatically lower due to failure in the continuous ferrite region along the TRIP78O weld fusion line. Filler metal strength did not affect the static and dynamic tensile properties of either the butt or lap-joints. Additional work is recommended to extend the results of this study for the optimization of GMAW procedures for particular applications.

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1969-11 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Joining Operations for Aerospace Materials written by Selim Gürgen and published by Springer Nature. This book was released on with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superalloys 2020 written by Sammy Tin and published by Springer Nature. This book was released on 2020-08-28 with total page 1098 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 14th International Symposium on Superalloys (Superalloys 2020) highlights technologies for lifecycle improvement of superalloys. In addition to the traditional focus areas of alloy development, processing, mechanical behavior, coatings, and environmental effects, this volume includes contributions from academia, supply chain, and product-user members of the superalloy community that highlight technologies that contribute to improving manufacturability, affordability, life prediction, and performance of superalloys.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Street Railway Journal written by and published by . This book was released on 1919 with total page 1412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Railway Electrical Engineer written by and published by . This book was released on 1918 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Reports written by and published by . This book was released on 1961 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1991-10 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Industrial and Production Engineering written by Kripa Shanker and published by Springer. This book was released on 2019-04-23 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the International Conference on Future Learning Aspects of Mechanical Engineering (FLAME 2018). The book discusses different topics of industrial and production engineering such as sustainable manufacturing systems, computer-aided engineering, rapid prototyping, manufacturing management and automation, metrology, manufacturing process optimization, casting, welding, machining, and machine tools. The contents of this book will be useful for researchers as well as professionals.

Download or read book Recent Developments in Mechanics and Design written by D. K. Singh and published by Springer Nature. This book was released on with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laser Welding written by João Pedro Oliveira and published by MDPI. This book was released on 2020-05-13 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser welding is a high-energy process used in a wide range of advanced materials to obtain micro- to macro-sized joints in both similar and dissimilar combinations. Moreover, this technique is widely used in several industries, such as automotive, aerospace, and medical industries, as well as in electrical devices. Although laser welding has been used for several decades, significant and exciting innovations often arise from both the process and/or advanced materials side.

Download or read book Advances in Additive Manufacturing and Joining written by M. S. Shunmugam and published by Springer Nature. This book was released on 2019-10-16 with total page 749 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents research papers on additive manufacturing (popularly known as 3D printing) and joining which were presented during the 7th International and 28th All India Manufacturing Technology, Design and Research conference 2018 (AIMTDR 2018). The contents of this volume present the latest technological advancements for improving the efficiency, accuracy and speed of the additive manufacturing process and in fusion and solid-state welding technologies, with a variety of technologies, including fused deposition modelling, poly jet 3D printing, weld deposition based technology, selective laser melting and important welding technologies being covered. This volume will be of interest to academicians, researchers, and practicing engineers alike.

Download or read book Welding and Brazing written by and published by . This book was released on 1956 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected unclassified reports, supplementing those abstracted in TID-3059, which were available in TISE files on July 1, 1956, on welding and brazing of materials of interest to nuclear technology, such as Al, Be, Hf, Mo, Th, Ti, Zr, stainless steels, high-temperature alloys, pressure vessels, and heat exchangers, are annotated. Author, subject, and report number indexes are included. 127 references.

Download or read book Trends In Welding Research written by Stan A. David and published by ASM International. This book was released on 2006-01-01 with total page 1015 pages. Available in PDF, EPUB and Kindle. Book excerpt: