Evolution of Structure and Properties of Micro-Nano Structure 2507 Duplex Stainless Steel Prepared by Aluminothermic Reduction

doi:10.3390/cryst12060848

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Evolution of Structure and Properties of Micro-Nano Structure 2507 Duplex Stainless Steel Prepared by Aluminothermic Reduction
	Zhan, Faqi 2; Liu, Xiao 3; Zhang, Hua 3; Wang, Keliang 3; Xu, Shipeng 1; Zhu, Min 3; Zheng, Yuehong 2; La, Peiqing 2
刊名	CRYSTALS
	2022-06-01
卷号	12 期号:6
关键词	micro-nano structure 2507 duplex stainless steel rolling deformation mechanical property aluminothermic reaction
DOI	10.3390/cryst12060848
英文摘要	In this work, a large ingot of micro-nano structure 2507 duplex stainless steel was prepared in a single step using the aluminothermic reaction method. Chromium having different excess fractions were added to reaction powders to make up for evaporation loss, and the results show that the composition and structure of 2507 duplex stainless steel with a chromium excess ratio of 70% are satisfactory. The volume fraction of nanocrystalline in as-cast alloy was 41% and the average grain size was 34 nm. Additionally, the anticipated steels were rolled roughly with deformation of 40% at 1000 degrees C and followed by fine rolling with deformation of 30, 50 and 70%, separately, at 800 degrees C. Then, the effects of rolling deformation and precipitation on mechanical properties were studied in detail. Compared with the as-cast alloy, there was no phase transformation in the alloys with deformation of 30 and 50%, and they were still composed of gamma and alpha phases, whereas the sigma phase appeared in the alloy with deformation of 70%. When the deformation was 50%, the rolled alloy achieved the best performance, and the tensile strength, yield strength, and elongation were 912 MPa, 523 MPa, and 24.3%, respectively.
WOS研究方向	Crystallography ; Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000816259700001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158870]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院经济管理学院马克思主义学院
作者单位	1.Jiuquan Vocat & Tech Coll, Gansu Key Lab Solar Power Generat Syst Project, Jiuquan 735000, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 3.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Zhan, Faqi,Liu, Xiao,Zhang, Hua,et al. Evolution of Structure and Properties of Micro-Nano Structure 2507 Duplex Stainless Steel Prepared by Aluminothermic Reduction[J]. CRYSTALS,2022,12(6).
APA	Zhan, Faqi.,Liu, Xiao.,Zhang, Hua.,Wang, Keliang.,Xu, Shipeng.,...&La, Peiqing.(2022).Evolution of Structure and Properties of Micro-Nano Structure 2507 Duplex Stainless Steel Prepared by Aluminothermic Reduction.CRYSTALS,12(6).
MLA	Zhan, Faqi,et al."Evolution of Structure and Properties of Micro-Nano Structure 2507 Duplex Stainless Steel Prepared by Aluminothermic Reduction".CRYSTALS 12.6(2022).