Influence of Y on microstructures and mechanical properties of high strength steel weld metal

被引：25

作者：

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

Liu, R. P. ^{[1
]}

Wei, Y. H. ^{[1
]}

Cheng, Z. G. ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211106, Jiangsu, Peoples R China

来源：

MATERIALS & DESIGN | 2014年 / 62卷

关键词：

Yttrium oxide; High strength steel electrode; Acicular ferrite; Toughness; Cold cracking sensitivity; ACICULAR FERRITE; NUCLEATION; RESISTANCE; INCLUSIONS; HARDNESS;

D O I：

10.1016/j.matdes.2014.02.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A comprehensive investigation is conducted into the effect of yttrium oxide on microstructures of weld metal deposits and mechanical properties of high strength steel electrode measured in the Ni-Cr-Mo-V alloy system. The results demonstrate a gradual decrease of the content of proeutectoid ferrites and a gradual increase of acicular ferrites, as the content of yttrium oxide increases from 0% to 0.02%. However, as the content of yttrium oxide surpasses 0.02%, the content of acicular ferrites reduces significantly. Meanwhile, the toughness under low-temperature impact increases and then decreases, as the content of yttrium varies from 0% to 0.03%, reaching the maximum of 102J at the field of 0.02%. However, the strength fails to change significantly. The results also indicate that the cold cracking sensitivity is lower when the content of yttrium oxide is 0.02%, but the values would increase as the content of yttrium oxide fluctuates. (C) 2014 Published by Elsevier Ltd.

引用

页码：83 / 90

页数：8

共 22 条

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