| 汽轮机末级叶片断裂分析 |
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| 引用本文： | 杨庆平,王利峰,张武锋,陆辉.汽轮机末级叶片断裂分析[J].中国制造业信息化,2011,40(13). |
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| 作者姓名： | 杨庆平 王利峰 张武锋 陆辉 |
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| 作者单位： | 江苏省机械研究设计院有限责任公司,江苏南京,210012 |
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| 摘 要： | 采用扫描电镜观察、能谱分析、显微组织分析、硬度和拉伸试验等方法对断裂叶片进行了检验分析。结果表明:叶片断裂是因为叶片在热处理后力学性能没有达到标准技术要求;叶片工作时表面缺陷在交变应力作用下扩展,最终导致叶片的疲劳断裂。
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| 关 键 词： | 沉淀硬化不锈钢 疲劳断裂 力学性能 |
The Fracture Analysis of the Last Stage Blade in Turbine |
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| YANG Qing-ping,WANG Li-feng,ZIANG Wu-feng,LU Hui.The Fracture Analysis of the Last Stage Blade in Turbine[J].Manufacture Information Engineering of China,2011,40(13). |
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| Authors: | YANG Qing-ping WANG Li-feng ZIANG Wu-feng LU Hui |
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| Affiliation: | YANG Qing-ping,WANG Li-feng,ZHANG Wu-feng,LU Hui(Jiangsu Provine Machinery Research & Designing Institute Ltd.,Co.,Jiangsu Nanjing,210012,China) |
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| Abstract: | It is usual for investigation of the fractured blade to use SEM,EDS,Optical microscopy,hardness testing and tensile testing.Results show that the reason of blade fractured is the heat treatment which decreases the mechanical properties,the defects expended under alternate stress during service of blade. |
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| Keywords: | Precipitation Hardened Stainless Steel Fatigue and Fracture Mechanical Properties |
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