Effect of Martensite Structure and Carbide Precipitates on Mechanical Properties of Cr-Mo Alloy Steel with Different Cooling Rate-Reference-Cited by-同舟云学术

Effect of Martensite Structure and Carbide Precipitates on Mechanical Properties of Cr-Mo Alloy Steel with Different Cooling Rate

Published:2018-08-29 Issue:2019 Volume:38 Page:113-124
ISSN:2191-0324
Container-title:High Temperature Materials and Processes
language:en
Short-container-title:

Author:

Zheng Yaxu¹²,Wang Fuming¹,Li Changrong³,Lin Yu²,Cao Ruifang⁴

Affiliation:

1. School of Metallurgical and Ecological Engineering , University of Science and Technology Beijing , Beijing 100083 , China

2. Materials Science and Engineering Department , Carnegie Mellon University , Pittsburgh PA 15213 , USA

3. School of Materials Science and Engineering , University of Science and Technology Beijing , Beijing 100083 , China

4. Rolling operation department , Beijing Shougang Co., LTD. , Tangshan 064404 , PR . China

Abstract

Abstract The effect of cooling rate on martensitic structure and carbides precipitation behavior was investigated based on Cr-Mo alloy steel with different quenching media of oil, water and 10% NaCl-water, respectively. The influence mechanism of martensite structure and carbide precipitates on mechanical properties was also studied. The results showed that martensite packets and blocks were refined with water quenching, however, they were coarse with oil or 10% NaCl-water quenching. Martensite laths were refined and dislocation density increased with increasing cooling rate. The carbides in tempered steel were coarse obviously with 10% NaCl-water quenching. The impact toughness deteriorated significantly with 10% NaCl-water quenching due to coarsening of martensite structure and carbides.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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