Investigation on the effects of microstructure on the impact and fracture toughness of a C-Mn steel with various microstructures

被引：20

作者：

Cao, R. ^{[1
,2
]}

Li, G. ^{[3
]}

Fang, X. Y. ^{[3
]}

Song, J. ^{[1
,2
]}

Chen, J. H. ^{[1
,2
]}

机构：

[1] Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Metall Mat, Minist Educ, Lanzhou 730050, Peoples R China

[2] Lanzhou Univ Technol, Key Lab Nonferrous Met Alloys, Minist Educ, Lanzhou 730050, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shanxi, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 564卷

关键词：

C-Mn steel; Microstructure; Impact; Cleavage fracture; CLEAVAGE FRACTURE; TEMPERATURES; BEHAVIOR;

D O I：

10.1016/j.msea.2012.11.120

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A C-Mn steel was heat-treated to exhibit three types of microstructures with different sizes of ferrite grains and carbide particles. The effects of microstructures on the impact and fracture toughness were studied through comparing the critical events and the local fracture stresses for cleavage fracture which were determined by the morphology and sizes of the grains and the carbide particles. The mechanism was analyzed why the microstructure with coarse grain and coarse carbide presents the inferior impact toughness while the comparable fracture toughness comparing with the microstructure with fine grain and coarse carbide. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：509 / 524

页数：16

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