Low-Temperature Toughness of the Austempered Offshore Steel

被引：0
|
作者：
C. Yu
T. C. Yang
C. Y. Huang
R. K. Shiue
机构：
[1] National Taiwan University,Department of Materials Science and Engineering
[2] China Steel Corporation,undefined
来源：
Metallurgical and Materials Transactions A | 2016年 / 47卷
关键词：
Bainite; Impact Toughness; Austempering; Lower Bainite; Lath Boundary;
D O I：
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中图分类号：
学科分类号：
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.
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页码：4777 / 4783
页数：6
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