Effect of Heat Treatments on Microstructural Evolution and Tensile Properties of 15Cr12MoVWN Ferritic/Martensitic Steel

doi:10.3390/met10091271

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	Effect of Heat Treatments on Microstructural Evolution and Tensile Properties of 15Cr12MoVWN Ferritic/Martensitic Steel
	Ma, Tingwei 1,2; Hao, Xianchao 3; Wang, Ping 2
刊名	METALS
	2020-09-01
卷号	10 期号:9 页码:17
关键词	15Cr12MoVWN steel tensile properties precipitate dislocation density microstructure
DOI	10.3390/met10091271
通讯作者	Hao, Xianchao(xchao@imr.ac.cn) ; Wang, Ping(wping@epm.neu.edu.cn)
英文摘要	In this study, the phase transformation temperature of 15Cr12MoVWN ferritic/martensitic steel was determined by differential scanning calorimetry to provide a theoretical basis for the design of a heat treatment process. An orthogonal design experiment was performed to investigate the relationship between microstructure and heat treatment parameters, i.e., normalizing temperature, cooling method and tempering temperature by evaluating the room-temperature and elevated-temperature tensile properties, and the optimum heat treatment parameters were determined. It is shown that the optimized heat treatment process was composed of normalizing at 1050 degrees C followed by air cooling to room temperature and tempering at 700 degrees C. Under the optimum heat treatment condition, the room-temperature tensile properties were 1014 MPa (UTS), 810.5 MPa (YS) and 18.8% (elongation), while the values are 577.5 MPa (UTS), 469 MPa (YS) and 39.8% (elongation) tested at 550 degrees C. The microstructural examination shows that the strengthening contributions from microstructural factors were the martensitic lath width, dislocations, M23C6, MX and grain boundaries of prior austenite grain (PAG) in a descending order. The main factors influencing the tensile strength of 15Cr12MoVWN steel were the martensitic lath width and dislocations.
资助项目	National Key Technology R&D Program, China[149601A-A033] ; Natural Science Foundation Guidance Plan of Liaoning Province[2019-ZD-0362]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	MDPI
WOS记录号	WOS:000580675300001
资助机构	National Key Technology R&D Program, China ; Natural Science Foundation Guidance Plan of Liaoning Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/140980]
专题	金属研究所_中国科学院金属研究所
通讯作者	Hao, Xianchao; Wang, Ping
作者单位	1.Yingkou Inst Technol, 46 Bowen Rd, Xishi Dist 115014, Yingkou, Peoples R China 2.Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma, Tingwei,Hao, Xianchao,Wang, Ping. Effect of Heat Treatments on Microstructural Evolution and Tensile Properties of 15Cr12MoVWN Ferritic/Martensitic Steel[J]. METALS,2020,10(9):17.
APA	Ma, Tingwei,Hao, Xianchao,&Wang, Ping.(2020).Effect of Heat Treatments on Microstructural Evolution and Tensile Properties of 15Cr12MoVWN Ferritic/Martensitic Steel.METALS,10(9),17.
MLA	Ma, Tingwei,et al."Effect of Heat Treatments on Microstructural Evolution and Tensile Properties of 15Cr12MoVWN Ferritic/Martensitic Steel".METALS 10.9(2020):17.