Quantitative analysis of microstructure and impact toughness in the simulated coarse-grained heat-affected zone of Cu-bearing steels

被引：4
|
作者：
Liu, Y. [1 ]
Li, G. Q. [1 ,2 ]
Wan, X. L. [1 ,2 ]
Gang, H. [1 ]
Wu, K. M. [1 ]
Zhang, X. [1 ]
机构：
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China
[2] Wuhan Univ Sci & Technol, Minist Educ, Key Lab Ferrous Met & Resources Utilizat, Wuhan, Hubei, Peoples R China
来源：
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES | 2019年 / 26卷 / 24期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
CGHAZ; Cu; inclusion; acicular ferrite; impact toughness; ACICULAR FERRITE FORMATION; LOW-CARBON; INTRAGRANULAR FERRITE; MECHANICAL-PROPERTIES; NUCLEATION; IMPROVEMENT; INCLUSIONS; CR;
D O I：
10.1080/15376494.2018.1455938
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Because of 0.32% Cu addition, the inclusion is modified from Al-Ti oxide covered with layer of MnS in Cu-free steel to Al-Ti oxide with shell of (Mn,Cu)S in Cu-bearing steel. The quantitative result reveals that the frequency of inclusion effectively for acicular ferrite nucleation, fraction of acicular ferrite and high angle grain boundary in the simulated coarse-grained heat-affected zone (CGHAZ) of Cu-bearing steel are higher than that of Cu-free steel, respectively. Therefore, the high density of acicular ferrite microstructures in CGHAZ of Cu-bearing steel with smaller crystallographic grain size has superior impact toughness than that in Cu-free steel.
引用
收藏
页码：2030 / 2039
页数：10
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