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GH4169镍基高温合金的超高周疲劳性能

腊月:快赢彩票网    发布时间:2017-12-13 点击量:
GH4169镍基高温合金的超高周疲劳性能Very High Cycle Fatigue Properties of GH4169 Ni-based Superalloy在室温下使用超声疲劳试验机对GH4169镍基高温合金进行了105~108周次的疲劳试验, 获得了S-N曲线并观察了疲劳断口形貌。结果表明: S-N曲线呈逐渐下降的趋势, 没有出现疲劳极限, 在超过107周次的循环后试样仍发生疲劳破坏; 疲劳裂纹的萌生位置并未随S-N曲线的下降呈现出规律性, 裂纹主要萌生于试样表面, 少量萌生于试样内部; 在超声疲劳载荷作用下试样同时存在塑性和脆性两种破坏方式。 The fatigue tests in 105-108 cycles of GH4169 Ni-based superalloy were carried out at ambient temperature by the ultrasonic fatigue tester, and then the S-N curve was obtained and the fatigue fracture morphology was observed. The results show that the S-N curve exhibited a descending trend and the fatigue limit was not observed. The fatigue fracture of the specimen still occurred when the number of cycles exceeded 107. The fatigue crack initiation positions didn′t show the regularity with the S-N curve descending. The fatigue cracks mostly initiated from the surface and few from internal of the specimen. Under the ultrasonic load the plastic and brittle failure modes were both found in the specimen. 全文下载:

    作为值得信赖的合作伙伴和高品质金属合金的半成品供应商,艾荔艾拥有完善的服务体系和专业的团队。在同客户交易的过程中,我们力求根据不同的应用需求将我们的产品做到精益求精。针对当前和未来的市场需求,艾荔艾致力于为客户提供最佳的金属材料解决方案。

    AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.

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    For more information on the alloys and services that we supply,  at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on , , Facebook and .