Microstructure and Stress-Rupture Property of Large-Scale Complex Nickel-Based Single Crystal Casting

IMR OpenIR

	Microstructure and Stress-Rupture Property of Large-Scale Complex Nickel-Based Single Crystal Casting
其他题名	Microstructure and Stress-Rupture Property of Large-Scale Complex Nickel-Based Single Crystal Casting
	Huang Min 1; Zhang Gong 1; Wang Dong 1; Dong JiaSheng 1; Wang Li 1; Lou LangHong 1
	2018
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	31 期号:8 页码:887-896
摘要	The microstructure and stress-rupture property of the large-scale complex single crystal (SX) casting DD10 were investigated in high-rate solidification process. It is found that the primary dendrite arm spacing (PDAS) does not increase monotonically with the height increase. When across the platform, the temperature gradient increases due to the effect of platform, and the corresponding PDAS decreases. The distribution of eutectic volume fraction in large-scale complex SX casting is affected by PDAS, solid back diffusion, and the development of high order dendrites. The eutectic volume fraction contained in the sample taken below the platform decreases with the height increase. While the eutectic volume fraction contained in the sample taken upper the platform increases gradually with the height increase. After heat treatment, most of the 7/7' eutectics are eliminated and the components are distributed uniformly. The similar stress rupture properties of the samples at different heights in the same direction are obtained.
其他摘要	The microstructure and stress-rupture property of the large-scale complex single crystal (SX) casting DD10 were investigated in high-rate solidification process. It is found that the primary dendrite arm spacing (PDAS) does not increase monotonically with the height increase. When across the platform, the temperature gradient increases due to the effect of platform, and the corresponding PDAS decreases. The distribution of eutectic volume fraction in large-scale complex SX casting is affected by PDAS, solid back diffusion, and the development of high order dendrites. The eutectic volume fraction contained in the sample taken below the platform decreases with the height increase. While the eutectic volume fraction contained in the sample taken upper the platform increases gradually with the height increase. After heat treatment, most of the c/c0 eutectics are eliminated and the components are distributed uniformly. The similar stress rupture properties of the samples at different heights in the same direction are obtained.
关键词	SUPERALLOY TURBINE-BLADES HEAT-TREATMENT HIGH-TEMPERATURE SOLIDIFICATION GROWTH SEGREGATION SIMULATION EVOLUTION Large-scale single crystal Platform Primary dendrite arm spacing Eutectic volume fraction Stress-rupture property
收录类别	CSCD
语种	英语
资助项目	[National Key Research and Development Program of China] ; [National Natural Science Foundation of China]
CSCD记录号	CSCD:6303468
引用统计	被引频次：3[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155761
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.中国科学院大学
推荐引用方式 GB/T 7714	Huang Min,Zhang Gong,Wang Dong,et al. Microstructure and Stress-Rupture Property of Large-Scale Complex Nickel-Based Single Crystal Casting[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2018,31(8):887-896.
APA	Huang Min,Zhang Gong,Wang Dong,Dong JiaSheng,Wang Li,&Lou LangHong.(2018).Microstructure and Stress-Rupture Property of Large-Scale Complex Nickel-Based Single Crystal Casting.ACTA METALLURGICA SINICA-ENGLISH LETTERS,31(8),887-896.
MLA	Huang Min,et al."Microstructure and Stress-Rupture Property of Large-Scale Complex Nickel-Based Single Crystal Casting".ACTA METALLURGICA SINICA-ENGLISH LETTERS 31.8(2018):887-896.