| 取向偏离度对镍基单晶高温合金DD10低周疲劳行为的影响 | |
| Alternative Title | Orientation Dependence of Low Cycle Fatigue Properties of a Ni-based Single Crystal Superalloy DDIO |
| Fan Zhidong1; Li Ji1; Wang Dong2; Lou Langhong2; Zhang Jian2 | |
| 2018 | |
| Source Publication | 稀有金属材料与工程
 |
| ISSN | 1002-185X |
| Volume | 47.0Issue:1.0Pages:1-6 |
| Abstract | 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。 |
| Other Abstract | 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. |
| Keyword | 单晶高温合金 合金DD10 取向偏离 低周疲劳 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:6160377 |
| Citation statistics |
Cited Times:2[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/145731 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.Xi'an Thermal Power Research Institute Co., Ltd 2.中国科学院金属研究所 |
| Recommended Citation 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. |
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