| 马氏体不锈钢大拘束度结构焊接裂纹及防止措施 |
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| 引用本文： | 赵映龙,吴志生. 马氏体不锈钢大拘束度结构焊接裂纹及防止措施[J]. 机械工程与自动化, 2011, 0(1): 96-98 |
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| 作者姓名： | 赵映龙 吴志生 |
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| 作者单位： | 太原科技大学材料科学与工程学院,山西,太原,030024 |
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| 基金项目： | 山西省自然科学基金资助项目(2009011028-2); 山西省大学生创新项目(U2T20090065); 山西省留学基金资助项目(20081072) |
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| 摘 要： | 马氏体不锈钢常温组织为硬脆的马氏体组织,它的导热性较碳钢差,焊接残余应力较大,使得在焊后冷却时容易产生裂纹。从力学、金属学两方面分析了产生裂纹的原因,并通过更改焊接材料、优化焊接参数等解决了约束型马氏体不锈钢产生焊接裂纹的问题。
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| 关 键 词： | 大拘束 马氏体不锈钢 裂纹 防止措施 |
Weld Cracks and Prevention Measures of Martensitic Stainless Steel with High Contraint Degree |
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| ZHAO Ying-long,WU Zhi-sheng. Weld Cracks and Prevention Measures of Martensitic Stainless Steel with High Contraint Degree[J]. Mechanical Engineering & Automation, 2011, 0(1): 96-98 |
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| Authors: | ZHAO Ying-long WU Zhi-sheng |
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| Affiliation: | ZHAO Ying-long,WU Zhi-sheng(School of Material Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China) |
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| Abstract: | Martensitic stainless steel has crisp-hard martensite structure at room temperature,and has less thermal conductance than carbon steel,so there is high residual stress in welding heat-affected zone and the welded parts ofen engender cracks during cooling down.In the paper,the causes of cracks were analyzed form mechanics and metallography.The crack problem of martensitic stainless steel was solved by changing the weld material and optimizing the weld parameters. |
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| Keywords: | high constraint degree martensitic stainless steel crack prevention measures |
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