Effect of long-time aging on precipitated phase and tensile properties of GH625 alloy

doi:10.19476/j.ysxb.1004.0609.2019.02.06

	Effect of long-time aging on precipitated phase and tensile properties of GH625 alloy
	Li, Ya-Min; Zhu, Rui-Ming; Liu, Hong-Jun; Jia, Zhi
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2019-02-01
卷号	29 期号:2 页码:262-269
关键词	Chemical analysis High resolution transmission electron microscopy Plasticity Precipitation (chemical) Scanning electron microscopy Tensile properties Tensile testing Thermal aging Thermal insulation Volume fraction Fitting method Full spectrum GH625 alloys Heat insulation method Large amounts Long-time aging Precipitated phase Yield ratios
ISSN号	10040609
DOI	10.19476/j.ysxb.1004.0609.2019.02.06
英文摘要	The effect of long-time aging on the precipitated phase and tensile properties of GH625 alloy was investigated by scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffractiometry and tensile tests. Using heat insulation method and Rietveld full spectrum fitting method, the volume fractions of the main precipitated phases of GH625 alloy during thermal aging were quantitatively analyzed. The relationship between volume fraction of precipitated phases and tensile properties was further analyzed. The results show that the γ phase in the microstructure of GH625 alloy transforms into γ' phase, γ″ phase and δ phase in sequence during long-time aging at 720.With aging time prolonging, the volume fractions of γ″ phase and δ phase increase, and the volume fraction of the γ' phase increases firstly and then decreases. The tensile properties of GH625 alloy are significantly affected by the precipitated phases. The γ' phase and γ″ phase can improve the strength of the alloy, but the γ″ phase with large size is not good to the plasticity of the alloy. The precipitation and growth of the large amount of δ phase decrease the strength of the alloy, but increase the yield ratio, while the plasticity of the alloy decreases greatly. © 2019, Science Press. 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/113965]
专题	材料科学与工程学院国际教育学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Ya-Min,Zhu, Rui-Ming,Liu, Hong-Jun,et al. Effect of long-time aging on precipitated phase and tensile properties of GH625 alloy[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2019,29(2):262-269.
APA	Li, Ya-Min,Zhu, Rui-Ming,Liu, Hong-Jun,&Jia, Zhi.(2019).Effect of long-time aging on precipitated phase and tensile properties of GH625 alloy.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,29(2),262-269.
MLA	Li, Ya-Min,et al."Effect of long-time aging on precipitated phase and tensile properties of GH625 alloy".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 29.2(2019):262-269.