The effects of Silicon and Copper on microstructures, tensile and Charpy properties of weld metals by refined X120 wire

被引：19

作者：

Cao, R. ^{[1
]}

Chan, Z. S. ^{[1
]}

Yuan, J. J. ^{[1
]}

Han, C. Y. ^{[1
]}

Xiao, Z. G. ^{[2
]}

Zhang, X. B. ^{[1
]}

Yan, Y. J. ^{[1
]}

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

机构：

[1] Lanzhou Univ Technol, Dept Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China

[2] Hobart Bros Co, Troy, OH 45373 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2018年 / 718卷

基金：

中国国家自然科学基金;

关键词：

Low-alloy high-strength X120 steel; Ductile-brittle transition temperature; Toughness; Microstructure; Cleavage fracture; HEAT-AFFECTED ZONE; MECHANICAL-PROPERTIES; TOUGHNESS;

D O I：

10.1016/j.msea.2018.01.080

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper analyzes the micro-mechanism of decrease of impact toughness with increasing Silicon and increasing Copper in weld metal of a low-alloy high-strength X120 steel. By comparing the microstructures, measuring the extending length of the fibrous crack, and calculating the local cleavage fracture stress oh and then using the basic principles of the micro-mechanism of cleavage fracture, the essential causes of change of toughness in the weld metal of high-strength steel welded joints are revealed in this work.

引用

页码：350 / 362

页数：13

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