Effect of austempering on microstructure and mechanical properties of a GCr18Mo steel

被引：10
|
作者：
Wen, Jiuba [1 ]
Li, Qian [1 ]
Long, Yongqiang [1 ]
机构：
[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471003, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 438卷 / SPEC. ISS.期
关键词：
GCr18Mo steel; B-L/M duplex structure; austempering;
D O I：
10.1016/j.msea.2006.02.199
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microstructure and mechanical properties of a GCr 18Mo steel were investigated. The martensite/lower bainite (B-L/M) duplex structure with various B-L volume fractions (f(BL)) or that full of B-L were produced by austenitizing at 870 degrees C, quenching in nitrates at 230 degrees C and holding for different times. The steels with such structures exhibit higher strength-toughness than that of full martensite. When f(BL) is approximately 37.5% obtained by holding for about 60 min, the duplex-structured steel gives rise to the best combination of mechanical properties. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：251 / 253
页数：3
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