| 活动拨柄开裂的分析研究 |
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| 引用本文： | 李晓玲,董毅,刘臻祥,周玉英. 活动拨柄开裂的分析研究[J]. 兵器材料科学与工程, 2004, 27(2): 58-60 |
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| 作者姓名： | 李晓玲 董毅 刘臻祥 周玉英 |
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| 作者单位： | 内蒙古北方重工业集团有限公司,中心理化室,包头,014033;内蒙古北方重工业集团有限公司工艺材料所,包头,014033;内蒙古北方重工业集团有限公司,培训中心,包头,014033 |
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| 摘 要： | 对活动拨柄开裂原因进行了断口分析、能谱分析、化学成分分析、金相检验和硬度测定。结果表明 :活动拨柄的断裂主要是沿晶断裂 ,引起沿晶断裂的原因主要是活动拨柄局部高频热处理时产生一类回火脆 ,致使材料局部出现脆化 ,在后续的磷化处理过程中发生脆断。提出了预防开裂的防范措施及改进建议。
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| 关 键 词： | 活动拨柄 沿晶断裂 回火脆 磷化处理 脆断 |
| 文章编号： | 1004-244X(2004)02-0058-03 |
| 修稿时间： | 2003-05-08 |
Cracking analysis of shifting handle |
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| LI Xiao-ling,DONG Yi,LIU Zhen-xiang,ZHOU Yu-ying. Cracking analysis of shifting handle[J]. Ordnance Material Science and Engineering, 2004, 27(2): 58-60 |
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| Authors: | LI Xiao-ling DONG Yi LIU Zhen-xiang ZHOU Yu-ying |
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| Affiliation: | LI Xiao-ling1,DONG Yi2,LIU Zhen-xiang3,ZHOU Yu-ying3 |
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| Abstract: | Fracture analysis,energy spectrum analysis,chemical composition analysis,metallographic examination and hardness test were employed to sdudy the cracked shifting handle.The results showed that the fracture of shifting handle were mainly intergranular fracture which happened because some parts peoduced the temper brittleness during high-frequent heat treatment and the material was brittled,then brittle fracture had happened at the late bonderite process.The author also put forward a proposal of the precautionary measures of the crack and improvement suggestion. |
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| Keywords: | shifting handle intergranular fracture temper brittleness bonderizing brittle fracture |
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