Characterizing Phase Transformations in the Coarse-Grained Heat-Affected Zone of EH550 Offshore Engineering Steel Subjected to Varied High Heat Inputs

被引：0

作者：

Ma, Junjie ^{[1
,2
]}

Zhong, Ming ^{[1
,2
]}

Wu, Yongwu ^{[1
,2
]}

Kaldre, Imants ^{[3
]}

Wang, Cong ^{[1
,2
]}

机构：

[1] Northeastern Univ, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China

[3] Univ Latvia, Inst Phys, LV-1004 Riga, Latvia

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2024年

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

IN-SITU OBSERVATION; IMPACT TOUGHNESS; GROWTH; BAINITE; MICROSTRUCTURE;

D O I：

10.1007/s11663-024-03294-w

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solid-state phase transformations in the coarse-grained heat-affected zone subjected to varied heat input of EH550 grade steel are documented through in situ confocal scanning laser microscope. It is observed that, with the increment of heat input, dominating microstructure changes from bainite to a hybrid of bainite + ferrite side plate. Furthermore, slender bainites are found to transform into blocky ones, the growth rate of which decreases dramatically from 13.2 to 2.2 mu m/s.

引用

页码：4115 / 4120

页数：6

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