Low-Temperature Toughness of the Austempered Offshore Steel

被引：14
|
作者：
Yu, C. [1 ]
Yang, T. C. [2 ]
Huang, C. Y. [2 ]
Shiue, R. K. [1 ]
机构：
[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan
[2] China Steel Corp, Kaohsiung 812, Taiwan
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2016年 / 47A卷 / 10期
关键词：
HEAT-AFFECTED ZONE; MECHANICAL-PROPERTIES; RETAINED AUSTENITE; CLEAVAGE FRACTURE; IMPACT TOUGHNESS; MICROSTRUCTURE; CONSTITUENTS; BAINITE;
D O I：
10.1007/s11661-016-3654-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study investigates low-temperature toughness of the offshore steel with two different austempering heat treatments. Toughness of upper bainite is significantly lower than that of lower bainite. Low impact toughness of the upper bainite is caused by the presence of martensite-austenite (MA) and increasing the amount of low-angle lath boundaries in upper bainite package. EBSD equipped in the SEM demonstrates an effective approach to analyze the misorientation angle of lath boundaries in upper bainite packet.
引用
收藏
页码：4777 / 4783
页数：7
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