delta-Ferrite Formation and Its Effect on the Mechanical Properties of Heavy-Section AISI 316 Stainless Steel Casting

doi:10.1007/s11661-020-05717-0

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	delta-Ferrite Formation and Its Effect on the Mechanical Properties of Heavy-Section AISI 316 Stainless Steel Casting
	Wang, Qiyu 1,2; Chen, Shenghu 1; Rong, Lijian 1
刊名	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
	2020-06-01
卷号	51 期号:6 页码:2998-3008
ISSN号	1073-5623
DOI	10.1007/s11661-020-05717-0
通讯作者	Chen, Shenghu(chensh@imr.ac.cn)
英文摘要	delta-Ferrite formation across the thickness of a heavy-section AISI 316 casting slab and the effect of its decomposition on the bending properties have been studied. Cellular-shaped delta-ferrite with the faction of less than 3 pct is observed at the surface position of the cast while skeletal-shaped delta-ferrite with the faction of up to 8 pct is present at the center position, which is attributed to the combined effects of macro-segregation and cooling rate. Extensive decompositions of delta-ferrite through direct transformation (delta -> sigma) and eutectoid transformation (delta -> sigma + gamma(2)) are demonstrated. Micro-cracks could be observed within the decomposed delta-ferrite on the convex surface of bending samples from both the surface and center position of the cast, but occurrence of cracking is only present in the sample from center position of the cast. Removal of the brittle sigma phase within delta-ferrite by a preheat treatment at 1050 degrees C could effectively improve the bending performance.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000533464200032
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138725]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, Shenghu
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qiyu,Chen, Shenghu,Rong, Lijian. delta-Ferrite Formation and Its Effect on the Mechanical Properties of Heavy-Section AISI 316 Stainless Steel Casting[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2020,51(6):2998-3008.
APA	Wang, Qiyu,Chen, Shenghu,&Rong, Lijian.(2020).delta-Ferrite Formation and Its Effect on the Mechanical Properties of Heavy-Section AISI 316 Stainless Steel Casting.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,51(6),2998-3008.
MLA	Wang, Qiyu,et al."delta-Ferrite Formation and Its Effect on the Mechanical Properties of Heavy-Section AISI 316 Stainless Steel Casting".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 51.6(2020):2998-3008.