Effect of isothermal heat treatment on semi-solid microstructure of ADC2-0.4Mg-0.9Cu alloys

doi:10.11817/j.ysxb.1004.0609.2022-36767

	Effect of isothermal heat treatment on semi-solid microstructure of ADC2-0.4Mg-0.9Cu alloys
	Huang, Xiao-Feng 1,2; Zhang, Sheng 1; Yang, Fan 1; Zhang, Zhan-Yu 1; Shang, Wen-Tao 1
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2022-06-28
卷号	32 期号:6 页码:1561-1570
关键词	Coarsening Copper alloys Heat treatment Isotherms Ostwald ripening ADC2-0.4mg-0.9cu aluminum alloy Coarsenings Evolution mechanism Holding temperatures Holding time Isothermal heat treatments Microstructure evolutions Non-dendritic structure Semi-solids Spheroidization
ISSN号	1004-0609
DOI	10.11817/j.ysxb.1004.0609.2022-36767
英文摘要	The effects of secondary heating temperature and holding time on microstructure evolution of semi-solid ADC2-0.4Mg-0.9Cu aluminum alloy were studied by using semi-solid isothermal heat treatment process. The results show that the amorphous dendritic structure of the alloy transforms into spherical and near-spherical non-dendritic structure by isothermal heat treatment. It is beneficial to increase the holding temperature or prolong the holding time properly for the separation and spheroidization of ADC2-0.4Mg-0.9Cu alloy. However, when the holding temperature exceeds 610 or the holding time exceeds 15 min, the non-dendritic tissues are prone to coarsening, which is caused by the combined growth mechanism and Ostwald maturation mechanism. The semi-solid microstructure evolution of ADC2-0.4Mg-0.9Cu aluminum alloy undergoes three processes: dendrite coarsening, separation, spheroidization and finally ripening coarsening. The average grain size, solid fraction and shape factor of non-dendrites are 50.162 μm, 42.75% and 1.671, respectively, under the optimal isothermal treatment at 610 for 15 min. © 2022, China Science Publishing & Media Ltd. All right reserved.
语种	中文
出版者	Central South University of Technology
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159750]
专题	材料科学与工程学院理学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Nonferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Huang, Xiao-Feng,Zhang, Sheng,Yang, Fan,et al. Effect of isothermal heat treatment on semi-solid microstructure of ADC2-0.4Mg-0.9Cu alloys[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2022,32(6):1561-1570.
APA	Huang, Xiao-Feng,Zhang, Sheng,Yang, Fan,Zhang, Zhan-Yu,&Shang, Wen-Tao.(2022).Effect of isothermal heat treatment on semi-solid microstructure of ADC2-0.4Mg-0.9Cu alloys.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,32(6),1561-1570.
MLA	Huang, Xiao-Feng,et al."Effect of isothermal heat treatment on semi-solid microstructure of ADC2-0.4Mg-0.9Cu alloys".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 32.6(2022):1561-1570.