Effect of Annealing Temperature on the Microstructure and Tensile Properties of a Bimodal Nano/Micro Grained 1020 Carbon Steel Prepared by Aluminothermic Reaction Casting

doi:10.1007/s12540-016-5343-z

	Effect of Annealing Temperature on the Microstructure and Tensile Properties of a Bimodal Nano/Micro Grained 1020 Carbon Steel Prepared by Aluminothermic Reaction Casting
	La, Peiqing; Guo, Xin; Wang, Hongding; Shi, Ting; Zhen, Xiaojuan; Wei, Fuan; Lu, Xuefeng
刊名	METALS AND MATERIALS INTERNATIONAL
	2016-03
卷号	22 期号:2 页码:236-242
关键词	aluminothermic reaction casting scanning electron microscopy (SEM) metals annealing mechanical properties
ISSN号	1598-9623
DOI	10.1007/s12540-016-5343-z
英文摘要	Bulk 1020 carbon steel was prepared by aluminothermic reaction casting. After casting, isothermal aging treatments at different temperatures are performed for different periods up to 8 h. Microstructure characterization was performed using many methods, including optical microscopy, X-ray diffraction, scanning electron microscopy and transmission electron microscopy. It was found that the steel consisted of a nanocrystalline-ferrite matrix and a microcrystalline pearlite phase with a laminar structure. The average grain sizes of the ferrite were 23, 24, 28, and 37 nm for the cast steel and for samples annealed at 600, 800, and 1000 degrees C, respectively. As the annealing temperature increased, the volume fraction of the pearlite initially increased and then decreased, while the laminar spacing of pearlite increased from 240 to 900 nm. When annealed at 1000 degrees C, a spherical black micron pearlite particle was formed. The tensile and yield strength dramatically decreased, and the elongation varied slightly with the annealing temperature. A ductile phase was achieved by extending the holding time.
资助项目	National Natural Science Foundation of China[51164022][51561020] ; Gansu Provincial Science and Technology Support Program[1304GK-CA027]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	KOREAN INST METALS MATERIALS
WOS记录号	WOS:000371651300011
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33751]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	La, Peiqing
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	La, Peiqing,Guo, Xin,Wang, Hongding,et al. Effect of Annealing Temperature on the Microstructure and Tensile Properties of a Bimodal Nano/Micro Grained 1020 Carbon Steel Prepared by Aluminothermic Reaction Casting[J]. METALS AND MATERIALS INTERNATIONAL,2016,22(2):236-242.
APA	La, Peiqing.,Guo, Xin.,Wang, Hongding.,Shi, Ting.,Zhen, Xiaojuan.,...&Lu, Xuefeng.(2016).Effect of Annealing Temperature on the Microstructure and Tensile Properties of a Bimodal Nano/Micro Grained 1020 Carbon Steel Prepared by Aluminothermic Reaction Casting.METALS AND MATERIALS INTERNATIONAL,22(2),236-242.
MLA	La, Peiqing,et al."Effect of Annealing Temperature on the Microstructure and Tensile Properties of a Bimodal Nano/Micro Grained 1020 Carbon Steel Prepared by Aluminothermic Reaction Casting".METALS AND MATERIALS INTERNATIONAL 22.2(2016):236-242.