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delta-Ferrite Formation and Its Effect on the Mechanical Properties of Heavy-Section AISI 316 Stainless Steel Casting
Wang, Qiyu1,2; Chen, Shenghu1; Rong, Lijian1
Corresponding AuthorChen, Shenghu(chensh@imr.ac.cn)
2020-06-01
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN1073-5623
Volume51Issue:6Pages:2998-3008
Abstractdelta-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.
DOI10.1007/s11661-020-05717-0
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000533464200032
PublisherSPRINGER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138729
Collection中国科学院金属研究所
Corresponding AuthorChen, Shenghu
Affiliation1.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
Recommended Citation
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.
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