2018 №04 (08) DOI of Article
2018 №04 (02)

The Paton Welding Journal 2018 #04
TPWJ, 2018, #4, 6-10 pages
Stressed state of welded and brazed assemblies from similar materials with a soft interlayer under axial loading

Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                      0957-798X (print)
Issue                       #4, 2018 (April)
Pages                      6-10
V.V. Kvasnytskyi1, V.F. Kvasnytskyi2, Dong Chunlin3, M.V. Matvienko2 and G.V. Yermolayev2
1NTUU «Igor Sikorskii Kyiv Polytechnic Institute» 37 Pobedy Prosp., 03056, Kyiv, Ukraine. E-mail: kvas69@ukr.net
2Admiral Makarov National University of Shipbuilding 9 Heroiv Ukrainy Prosp., 54025, Mykolaiv, Ukraine. E-mail: welding @nuos.edu.ua
3China-Ukraine E.O. Paton Institute of Welding Guangzhou, P.R.China. E-mail: dchunlin@163.com
Computer modeling method was used to study the stressed state in assemblies, manufactured by diffusion welding and brazing, under the impact of axial load. Cylindrical assemblies from steel with a copper interlayer are considered under loading above the copper yield point. It is shown that formation of a complex stressed state resulted in the level of equivalent stresses decreasing in the interlayer compared to the applied axial load, and increasing in a small zone of base metal near the outer surface at the butt joint with the interlayer that causes the effect of hardening (unloading) of the interlayer and softening (overloading) of base metal. Quantitative dependencies of the degree of interlayer hardening and base metal softening on more load magnitude were derived. It is found that at the elastoplastic stage of assembly loading base metal softening is external pronounced, than at the elastic stage. Degree of interlayer hardening at the elastic stage of its work does not depend on the magnitude of external load, and at the elastoplastic stage it is increased in proportion to the load. 9 Ref., 5 Figures.
Keywords: welded and brazed assemblies, soft interlayer, computer modeling, stressed state, force loading
Received:                12.02.18
Published:               11.04.18
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