| 侯玲玲,付亚波,黄圆圆,陈学林.环保阀门材料C46500坯料裂纹形成的原因[J].有色金属材料与工程,2013,34(2):. |
| 环保阀门材料C46500坯料裂纹形成的原因 |
| The Crack Cause of the Environment Protection Valve Material C46500 |
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| DOI： |
| 中文关键词: C46500坯料 裂纹形成机理 位错塞积理论 碳 氧化物 |
| 英文关键词:C46500 dough crack formation mechanics dislocation pile up theory |
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| 摘要点击次数: 2811 |
| 全文下载次数: 1992 |
| 中文摘要: |
| 研究了C46500坯料裂纹的形成机理.利用扫描电子显微镜观察裂纹形貌,通过能谱仪分析裂纹处的杂质成分,结果发现，裂纹内C和O元素的质量分数分别是无裂纹处的2.8倍和2.9倍.杂质的引入降低了材料的强度,增加了坯料的脆性,容易产生裂纹.因此,各种氧化物和碳元素的存在是造成阀门开裂的主要原因,裂纹形成机理为位错塞积理论. |
| 英文摘要: |
| In this paper,we have studied the formation mechanics of cracks of the billet C46500 in order to prevent from cracking.By using a scanning electron microscopy,we observed the crack morphology.By using an energy spectrometer,we analyzed the impurity components at cracks.The contents of carbon and oxygen at cracks are found to be 2.8 and 2.9 times of those at other places,respectively.Cracks are easily caused because the impurities reduce the strength of the material and increase the brittleness of the billet.The main reason of cracks is the presence of various oxides and carbon.The formation mechanics of cracks is the dislocation pile up theory. |
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