| 第二相对GH33A疲劳和蠕变交互作用机制的影响 |
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| 引用本文： | 刘江南,田长生.第二相对GH33A疲劳和蠕变交互作用机制的影响[J].航空学报,1989,10(7):404-408. |
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| 作者姓名： | 刘江南 田长生 |
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| 作者单位： | 西北工业大学
(刘江南)，西北工业大学(田长生) |
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| 摘 要： | 借助扫描电镜、透射电镜对试样的断口及剖面进行了金相观察,分析研究了第二相对GH33A合金在700℃下的晶界损伤方式及疲劳和蠕变交互作用的影响。
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| 关 键 词： | 第二相 晶界损伤 R型空洞 疲劳 蠕变 |
| 收稿时间： | 1988-09-26; |
INFLUENCE OF SECOND PHASE ON THE MECHANISM OF INTERACTION BETWEEN FATIGUE AND CREEP FOR GH33A |
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| Northwestern Polytechic University Liu Jiangnan and Tian Changsheng.INFLUENCE OF SECOND PHASE ON THE MECHANISM OF INTERACTION BETWEEN FATIGUE AND CREEP FOR GH33A[J].Acta Aeronautica et Astronautica Sinica,1989,10(7):404-408. |
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| Authors: | Northwestern Polytechic University Liu Jiangnan and Tian Changsheng |
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| Institution: | Northwestern Polytechic University Liu Jiangnan and Tian Changsheng |
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| Abstract: | In this paper, the influence of second phase on the behavior of interaction between fatigue and creep for a Nickel-based superalloy GH33A at 700℃ is investigated. Preliminary experimental results showed that the characteristics of intergranular damage and the interaction mechanism vary with the size ot second phase particles and the distance between them. The finely linked second phases at grain boundary cause W type intergranular creep damages its microscopic mechanism is that fatigue crack joins with W type microcrack. On the other hand, the thinly scattered coarse second phases at grain boundary cause R type void intergranular creep damage. |
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| Keywords: | Second phase intergranutar damage R type void fatigue creep |
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