Effect of Cr on Mechanical Properties and Microstructure in 0.27% C-1.0% Si-1.5% Mn Steel

Content Provider	Semantic Scholar
Author	Jeong, Woo Chang
Copyright Year	2016
Abstract	The variation in microstructure and mechanical properties during heat treatment was examined in a series of 0.27% C-1.0% Si-1.5% Mn steels with chromium contents in the range of 0 to 1.0 wt%. It was found that chromium decreased the martensite packet size through the austenite grain refinement and increased tensile strength in the as-quenched steel, about 70 MPa per 1.0 wt%. The 0.27% C-1.0% Si-1.5% Mn-1.0% Cr steel showed tensile strength of 1700 MPa in the as-quenched steel. The 0.27% C-1.0% Si-1.5% Mn-1.0% Cr steel revealed a full martensitic structure after air cooling from 900oC to room temperature, showing air hardening characteristics. Tempering at 150oC slightly decreased the tensile strength and increased elongation, which is in a good agreement with impact toughness result. (Received June 9, 2016; Revised July 13, 2016; Accepted July 22, 2016)
Starting Page	181
Ending Page	189
Page Count	9
File Format	PDF HTM / HTML
DOI	10.12656/jksht.2016.29.4.181
Alternate Webpage(s)	http://ocean.kisti.re.kr/downfile/volume/ksht/OCRHB6/2016/v29n4/OCRHB6_2016_v29n4_181.pdf
Alternate Webpage(s)	https://doi.org/10.12656/jksht.2016.29.4.181
Volume Number	29
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article