| 60Si2MnA铁轨铺设用弹条疲劳试验断裂分析 |
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| 引用本文： | 郭和平,李玉生,李彪.60Si2MnA铁轨铺设用弹条疲劳试验断裂分析[J].理化检验(物理分册),2011(2):107-110,129. |
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| 作者姓名： | 郭和平 李玉生 李彪 |
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| 作者单位： | 新乡航空工业(集团)有限公司; |
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| 摘 要： | 某60Si2MnA铁轨铺设用弹条疲劳试验寿命未达到规定值,通过对断裂弹条进行断口宏观和微观形貌观察、显微组织检查、硬度测试和化学成分分析,找出了弹条的断裂性质和早期断裂原因.结果表明:该弹条为弯曲-扭转疲劳断裂;弹条早期断裂的主要原因是其原材料碳含量偏低,导致热处理后材料硬度偏低,降低了弹条的疲劳性能;弹条表层脱碳形成...
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| 关 键 词： | 弹条 疲劳寿命 断裂分析 碳含量 脱碳 |
Fracture Analysis of 60Si2MnA Spring Rods for Laying Rail during Fatigue Life Test |
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| GUO He-ping,LI Yu-sheng,LI Biao.Fracture Analysis of 60Si2MnA Spring Rods for Laying Rail during Fatigue Life Test[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2011(2):107-110,129. |
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| Authors: | GUO He-ping LI Yu-sheng LI Biao |
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| Affiliation: | GUO He-ping,LI Yu-sheng,LI Biao(Xinxiang Aviation Industry Group Co.,Ltd.,Xinxiang 453049,China) |
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| Abstract: | Fatigue life of a batch of 60Si2MnA steel spring rods didn't reach the required value.The failure spring rods were analyzed by means of macro and micro observation of fracture surface,metallographic examination,hardness testing and chemical compositions analysis.The results show that the failure mode of the spring rods was fatigue fracture resulting from the co-effect of bending and twisting.The main reason for the early fracture of the spring rods was carbon content of their raw material was lower than the... |
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| Keywords: | spring rod fatigue life fracture analysis carbon conten decarburization |
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