Eliminating heat-affected zone of nuclear heat-resistant steel joint via low-temperature friction stir welding

doi:10.1016/j.msea.2024.147340

IMR OpenIR

	Eliminating heat-affected zone of nuclear heat-resistant steel joint via low-temperature friction stir welding
	Zhang, H. B.1,2,3; Wang, Z. W.1,3; Xue, P.1,3; Li, J. H.4; Wang, W. G.2; Zhang, H.1,3; Ni, D. R.1,3; Liu, F. C.1,3; Xiao, B. L.1,3; Ma, Z. Y.1,3
通讯作者	Wang, Z. W.(zwwang16b@imr.ac.cn) ; Zhang, H.(haozhang@imr.ac.cn)
	2024-11-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	916 页码:14
摘要	Ferritic/martensitic (F/M) heat-resistant steels are one of the most promising candidate materials applied in core fuel assemblies such as cladding and packaging in nuclear reactors, but their weldments with high performance especially the creep properties were difficult to obtain by conventional welding methods due to the formation of heat-affected zone (HAZ) and rapid dissolution of precipitates. Here we successfully averted the formation of HAZ by reducing the heat input during welding to improve the structure-property synergy of a 12Cr-F/M steel joint via a low-temperature friction stir welding (FSW) technology. Complex microstructure regions consisting of stirred zone (SZ), fine-grained HAZ and inter-critical HAZ were generated in the traditional FSW joint with a high heat input, while only SZ and thermo-mechanically affected zone were found in the low-temperature FSW joint with a peak temperature between the Ac3 and Ac1 temperature. Under dynamic recrystallization at the alpha+gamma twophase region, ultrafine ferrite and martensite were generated and large amounts of precipitates were retained, giving rise to the greatly improved microhardness and superior tensile strength and impact toughness on par with that of the base metal. This work recommends a feasible technique to produce high-performance heat-resistant steel joints for lengthening the service life of nuclear reactors.
关键词	Ferritic/martensitic heat-resistant steel Heat-affected zone Low-temperature friction stir welding Microstructural evolution Mechanical properties
资助者	National Natural Science Foundation of China ; Ling-Chuang Research Project of China National Nuclear Corporation ; IMR Innovation Fund
DOI	10.1016/j.msea.2024.147340
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52301067] ; National Natural Science Foundation of China[52171057] ; National Natural Science Foundation of China[51901225] ; Ling-Chuang Research Project of China National Nuclear Corporation ; IMR Innovation Fund[2023-PY18]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001337279200001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190799
专题	中国科学院金属研究所
通讯作者	Wang, Z. W.; Zhang, H.
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Liaoning Petrochem Univ, Sch Mech Engn, Fushun 113001, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 4.China Inst Atom Energy, Div Reactor Engn Technol Res, Beijing 102413, Peoples R China
推荐引用方式 GB/T 7714	Zhang, H. B.,Wang, Z. W.,Xue, P.,et al. Eliminating heat-affected zone of nuclear heat-resistant steel joint via low-temperature friction stir welding[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,916:14.
APA	Zhang, H. B..,Wang, Z. W..,Xue, P..,Li, J. H..,Wang, W. G..,...&Ma, Z. Y..(2024).Eliminating heat-affected zone of nuclear heat-resistant steel joint via low-temperature friction stir welding.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,916,14.
MLA	Zhang, H. B.,et al."Eliminating heat-affected zone of nuclear heat-resistant steel joint via low-temperature friction stir welding".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 916(2024):14.