单晶高温合金弹性模量和泊松比测试方法的现状分析
Current situation of research on test methods for elastic modulus and Poisson's ratio of single crystal superalloys
查看参考文献54篇
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文摘
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针对单晶高温合金等材料弹性常数表现出的各向异性特点,归纳了现有用于单晶高温合金弹性模量和泊松比的两种主要测试方法:静态法和动态法。分析单晶高温合金弹性模量和泊松比的国内外研究现状,总结目前国内外研究中存在的主要问题及可行的解决途径,并指出:单晶高温合金弹性模量和泊松比测试缺乏专门的测试标准;相比国外,国内在测试与表征技术研究方面还存在明显的差距,工程应用中往往忽视晶体取向对弹性模量和泊松比的影响,因此有必要针对现有的测试标准和方法对测量单晶高温合金弹性常数的误差影响进行评估,制定适用于单晶高温合金的测试标准。同时,详细阐述在考虑晶体取向的影响下,通过对晶体取向指数与弹性模量的线性回归分析,建立单晶高温合金DD6材料弹性模量和泊松比与晶体取向的定量关系的过程。 |
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其他语种文摘
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In view of the anisotropic characteristics of elastic constants of single crystal superalloys and other materials, this paper summarizes two main existing testing methods for measuring elastic moduli and Poisson 's ratio of single crystal superalloys: static method and dynamic method, and analyses the research status of elastic moduli and Poisson's ratio of single crystal superalloys both at home and aboard. Also, the main problems and feasible solutions in current research both at home and abroad are summarized. And it is pointed out that there is no special testing standard for the elastic moduli and Poisson's ratio of single crystal superalloys. Compared with foreign countries, there is still an obvious gap in the testing and characterization technology in China, and effect of crystal orientation on elastic moduli and Poisson's ratio is often neglected in engineering applications. So it is necessary to estimate the influence of errors in measuring elastic constants of single crystal alloys by exiting testing standards. Meanwhile, this paper describes how to establish the quantitative relationship between crystal elastic moduli and arbitrary crystal orientation for single crystal superalloy DD6 through linear regression analysis of crystal orientation index and elastic moduli. |
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来源
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航空材料学报
,2019,39(3):25-34 【核心库】
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DOI
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10.11868/j.issn.1005-5053.2019.000019
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关键词
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单晶高温合金
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弹性模量和泊松比
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静态法
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动态法
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晶体取向
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地址
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中国航发北京航空材料研究院中国航空发动机集团材料检测与评价重点实验室, 航空材料检测与评价北京市重点实验室;;材料检测与评价航空科技重点实验室, 北京, 100095
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-5053 |
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学科
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航空 |
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基金
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航空动力基金项目
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文献收藏号
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CSCD:6510135
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