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Homogenization of microstructure and hardness of surface layer of SS400 steel welded joint
Li, D; Chen, HN; Liu, G; Lu, K
Corresponding AuthorLi, D()
2001-09-18
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume37Issue:9Pages:980-984
AbstractThe surface layer of the welded joint of SS400 steel was treated by high-energy shot peening (HESP) technique, and characterized by means of the XRD, TEM and SEM. The hardness variation along the depth of the treated sample was examined after treatment. Experimental results show that the coarse-grained microstructure of top-surface layer of welded joint can be refined into nano-scale after the HESP treatment, and these nanocrystalline grains are about 10 mn in diameter and possess nearly random crystallographic orientations. The same hardness can be found for the nanostructured surface layers of the base metal, HAZ and weld of SS400 steel respectively, which is much higher than that of the sample before the HESP treatment. Homogenization of microstructure and hardness of the surface layer of SS400 steel welded joint are achieved. The strengthening of the surface layer can be primarily attributed to the surface nano crystallization.
Keywordwelded joint high-energy shot peening surface nano crystallization microstructure microhardness
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000172767200018
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/112648
Collection中国科学院金属研究所
Corresponding AuthorLi, D
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Inst Met Res, State Key Lab RSA, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li, D,Chen, HN,Liu, G,et al. Homogenization of microstructure and hardness of surface layer of SS400 steel welded joint[J]. ACTA METALLURGICA SINICA,2001,37(9):980-984.
APA Li, D,Chen, HN,Liu, G,&Lu, K.(2001).Homogenization of microstructure and hardness of surface layer of SS400 steel welded joint.ACTA METALLURGICA SINICA,37(9),980-984.
MLA Li, D,et al."Homogenization of microstructure and hardness of surface layer of SS400 steel welded joint".ACTA METALLURGICA SINICA 37.9(2001):980-984.
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