Effective strategies for improving quenched microstructure and mechanical properties of hot-rolled seamless steel pipes

被引：0
|
作者：
Wang, Chao [1 ,2 ]
Wang, Xin [3 ,4 ]
Fu, Bo [1 ]
Han, Yanfa [1 ]
Yuan, Guo [2 ]
机构：
[1] State Key Lab Met Mat Marine Equipment & Applicat, Anshan 114021, Peoples R China
[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China
[3] Shenyang Key Lab Intelligent Technol Adv Ind Equip, Shenyang 110870, Peoples R China
[4] Shenyang Univ Technol, Shenyang Key Lab Adv Struct Mat & Applicat, Shenyang 110870, Peoples R China
来源：
MATERIALS LETTERS | 2025年 / 379卷
基金：
中国国家自然科学基金;
关键词：
Particles; Microstructure; Martensite; Impact energy; Phase transformation; FERRITE; ALLOYS;
D O I：
10.1016/j.matlet.2024.137707
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The containing Ti-Mg-Ca-O composite particles were innovatively used to achieve microstructure refinement and properties improvement of hot-rolled seamless steel pipes, and compared with conventional steel (C# steel). The results show that the C# steel mainly consisted of parallel lath martensite after on-line quenching. Under the same rolling and heat treatment conditions, dominant Ti-Mg-Ca-O composite particles in modified steel (M# steel) were effective nucleation sites of acicular ferrite, dividing the prior austenite grains and refining microstructures. The strength values of the both steels were at the same level, however, the impact energy of M# steel was significantly higher than C# steel, increasing by 28%. This study provides an effective method for further microstructure refinement of hot-rolled seamless steel tubes.
引用
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页数：5
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