An improved toughness process for high-temperature hot-rolled HSLA steel via inclusion-induced acicular ferrite nucleation

被引：1

作者：

Wang, Xin ^{[1
,2
]}

Wu, Zihan ^{[3
]}

Zhang, Nannan ^{[1
,2
]}

Wang, Chao ^{[3
]}

Yuan, Guo ^{[3
]}

机构：

[1] Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China

[2] Prov Key Lab Adv Welding Technol & Automat, Shenyang 110870, Peoples R China

[3] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China

来源：

MATERIALS LETTERS | 2024年 / 360卷

关键词：

HSLA steel; Microstructure; Mechanical properties; Particles; Acicular ferrite;

D O I：

10.1016/j.matlet.2024.135969

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A feasible method of enhancing the impact toughness (-20 degrees C) of high-temperature hot-rolled HSLA steels was proposed. The results show that the toughness of the improved hot-rolled steel containing TiOx-CaO-ZrO2 oxide particles was significantly enhanced by -132 J compared with conventional steel containing Al-Ca oxide particles. The fine (Ti, Ca, Zr) Ox particles with high-density of -937 counts/mm2 significantly promotes anticracking acicular ferrite (AF) nucleation. Moreover, the fractional volume of AF increased from -79 % to -85 % when the rolling temperature was increased from -1055 degrees C to -1085 degrees C.

引用

页数：4

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