In Situ Observation of Martensite Lath Growth Behaviors in the Coarse Grained Heat-Affected Zone of 1.25Cr-0.5Mo Heat-Resistant Steel During Simulated Welding

被引：9
|
作者：
Shen, Yang [1 ]
Wang, Cong [1 ]
机构：
[1] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2019年 / 50A卷 / 11期
基金：
中国国家自然科学基金;
关键词：
TRANSFORMATION BEHAVIOR; PHASE-TRANSFORMATION; SHIPBUILDING STEEL; KINETICS; NUCLEATION; MICROSTRUCTURE; BAINITE; FERRITE; POWER;
D O I：
10.1007/s11661-019-05420-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work, the nucleation and growth of martensite laths in the coarse grained heat-affected zone of 1.25Cr-0.5Mo steel have been systematically studied by high-temperature confocal scanning laser microscope. It is found that martensite laths preferentially nucleate on, in an increasing order of difficulty, grain boundaries, inclusions, and grain interior. However, their growth rates are governed by the degree of supercooling, and vary over a wide range from 9.4 to 162.4 mu m/s. (C) The Minerals, Metals & Materials Society and ASM International 2019
引用
收藏
页码：4955 / 4960
页数：6
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