Achieving Excellent Strength–Ductility and Impact Toughness Combination by Cyclic Quenching in Medium Mn TRIP-Aided Steel

Journal Article · Thu Nov 15 04:00:00 EST 2018 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-018-3662-6· OSTI ID:22863203

Zhang, Lei; Huang, Xingmin; Wang, Yanhua; Guo, Yuanbo; Dai, Guangze ^[1]; Li, Dongsheng ^[2]

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1. Southwest Jiaotong University, School of Materials Science and Engineering, and Key, Lab of Advanced Technologies of Materials (Ministry of Education) (China)
2. Jiangsu University, School of Materials Science and Engineering (China)

A novel heat treatment process combined cyclic quenching (CQ) with austenite reversion treatment (ART) is proposed to obtain high strength–ductility and high-impact toughness combination in Fe-0.18C-8.92Mn-3.43Al (in mass%) steel. The process referred as CQ-ART was designed for accomplishing the following objectives: (i) refine the prior austenite grains during cyclic quenching process, (ii) further obtain the refined austenite–ferrite block and (iii) improve the stabilities of retained austenite with Mn/C enrichment during ART process. The outstanding product of tensile strength and total elongation of CQ-ART-treated steels was 41.53 and 37.39 GPa%, respectively, and higher than the ART steel of 27.45 GPa%. The highest Charpy impact toughness of CQ-ART steel can reach to 221 J, which is mainly attributed to the refined grains and discontinuous transformation-induced plasticity (TRIP) effect.

• OSTI ID: 22863203
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 11 Vol. 27; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITE
DUCTILITY
ELONGATION
FERRITE
HEAT TREATMENTS
PLASTICITY
PRESSURE RANGE GIGA PA
QUENCHING
STABILITY
STEELS