Induction of large twin related domains and the grain boundary evolution during hot plate rolling and annealing of 316H-type stainless steel

被引：6

作者：

Wang, Zhiguo ^{[1
]}

Tang, Shuai ^{[1
]}

Zhang, Weina ^{[1
]}

Gao, Fei ^{[2
]}

Chen, Jun ^{[1
]}

Liu, Zhenyu ^{[1
]}

机构：

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

[2] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Lightweight Struct Mat, Shenyang 110819, Liaoning, Peoples R China

来源：

MATERIALS LETTERS | 2022年 / 311卷

基金：

中国国家自然科学基金;

关键词：

Grain boundaries; Corrosion; Hot rolling; 316H stainless steel; CONNECTIVITY; RESISTANCE;

D O I：

10.1016/j.matlet.2021.131590

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Special thermomechanical processing (TMP) routes of hot rolling and annealing were designed to induce large twin related domains (TRDs) in nuclear-grade 316H plates, and the evolution of twin-related (Sigma 3(n) , 1 <= n <= 3) boundaries and random high-angle grain boundaries (RHAGBs) was clarified. Results demonstrated that the large TRDs and poor RHAGB connectivity could be induced through hot rolling at 800 degrees C with low-strain followed by annealing. Optimized GB character distributions (GBCDs) presented favourable resistance to intergranular corrosion. Quasi in-situ heating observations showed that the operation of GB migration, recrystallization and grain growth during annealing were necessary to form large TRDs, and the slight deformation storage energy played important role to induce their initiation.

引用

页数：5

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