期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.140416
关键词
Hot-rolled; Steel; EBSD; Heat treatment; Hardness; Martensite
类别
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2016M3C1B5906959, NRF-2014R1A6A1030419]
- National Research Foundation of Korea (NRF) - Korea government (Ministry of Science and ICT) [NRF-2016M3C1B5906957]
- National Research Foundation of Korea [2016M3C1B5906957, 2016M3C1B5906959] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A multi-layered plate composed of high-Cr martensitic stainless steel with robust interfacial strength was produced through repetitive hot roll bonding at elevated temperature. The carbon content fluctuated along the thickness direction, and the multi-layered composite structure exhibited an effective combination of strength and ductility. Strong bonding at each interface was confirmed through tensile testing with in-situ observation during deformation.
A multi-layered plate with robust interfacial strength composed of high-Cr martensitic stainless steel was produced via repetitive hot roll bonding (RHRB) at elevated temperature. The minimum processing temperature required for the production of multi-layered plates turned out to be in the two-phase region between the A(1) and A(3) temperatures of stainless steel. Decarburization took place on the surface layer of each process cycle and multi-layered plates were produced with a carbon content that fluctuated along the thickness direction that constitutes a composite plate. The multi-layered composite structure revealed an effective combination of strength and ductility. Also, strong bonding results at each interface were validated via tensile testing with in-situ observation from the sides of the specimens during deformation.
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