取向偏离度对镍基单晶高温合金DD10低周疲劳行为的影响

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	取向偏离度对镍基单晶高温合金DD10低周疲劳行为的影响
其他题名	Orientation Dependence of Low Cycle Fatigue Properties of a Ni-based Single Crystal Superalloy DDIO
	Fan Zhidong 1; Li Ji 1; Wang Dong 2; Lou Langhong 2; Zhang Jian 2
	2018
发表期刊	稀有金属材料与工程
ISSN	1002-185X
卷号	47.0 期号:1.0 页码:1-6
摘要	研究了特定试验条件下,镍基单晶DD10取向偏离001的程度对其低周疲劳行为的影响。结果表明：取向偏离度对DD10合金的低周疲劳行为影响明显。疲劳寿命随取向偏离度的增加而明显降低,在同等偏离度下,晶体取向靠近001-011的合金低周寿命优于取向靠近001-111的合金;分析发现：不同取向偏离度合金DD10低周疲劳寿命的差异源于其每循环周次的可累计塑性变形的差异。另一方面,取向偏离度对疲劳总应力幅和塑性应变幅的影响却截然相反,但对疲劳裂纹萌生和扩展方式影响不大。
其他摘要	Low cycle fatigue （LCF） properties of a nickel-based single crystal （SX） superalloy DD10 with different orientation deviation angles from the 001 axis were investigated at 760 ℃ with an invariable total strain amplitude of 1.4%. Results reveal that the LCF behaviors of DD10 exhibit a strong orientation-depandence. The fatigue life decreases apparently with the increment of the orientation deviation angle. For specimens with the same orientation deviation angle from the 001 axis, those on the 001-011 boundary exhibit a longer fatigue life than ones on the 001-111 boundary. It is found that the orientation-dependence of fatigue life stems from the difference of accumulated plastic deformation per cycle. On the other hand, both of total stress amplitude and plastic strain amplitude show a reverse orientation-dependence compared with the fatigue life. However, the orientation deviation shows no influence on the model of fatigue crack initiation and subsequent propagation.
关键词	单晶高温合金合金DD10 取向偏离低周疲劳
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6160377
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/145731
专题	中国科学院金属研究所
作者单位	1.Xi'an Thermal Power Research Institute Co., Ltd 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Fan Zhidong,Li Ji,Wang Dong,等. 取向偏离度对镍基单晶高温合金DD10低周疲劳行为的影响[J]. 稀有金属材料与工程,2018,47.0(1.0):1-6.
APA	Fan Zhidong,Li Ji,Wang Dong,Lou Langhong,&Zhang Jian.(2018).取向偏离度对镍基单晶高温合金DD10低周疲劳行为的影响.稀有金属材料与工程,47.0(1.0),1-6.
MLA	Fan Zhidong,et al."取向偏离度对镍基单晶高温合金DD10低周疲劳行为的影响".稀有金属材料与工程 47.0.1.0(2018):1-6.