| 卡车轮胎气门嘴开裂分析 |
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| 引用本文： | 杨力. 卡车轮胎气门嘴开裂分析[J]. 理化检验(物理分册), 2012, 0(3): 178-179,184 |
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| 作者姓名： | 杨力 |
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| 作者单位： | 上海材料研究所 |
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| 摘 要： | 某卡车轮胎的铜合金气门嘴在使用1-3个月后部分发生开裂。采用宏观检验、化学成分分析、金相检验、硬度测试、断口分析及能谱分析等方法对气门嘴开裂的原因进行了分析。结果表明：气门嘴经过冷加工变形后没有去应力退火，在应力和环境介质的共同作用下，发生了应力腐蚀开裂。
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| 关 键 词： | 卡车 轮胎 气门嘴 铜合金 应力腐蚀开裂 |
Cracking Analysis on Air Valve of Truck Tires |
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| YANG Li. Cracking Analysis on Air Valve of Truck Tires[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2012, 0(3): 178-179,184 |
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| Authors: | YANG Li |
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| Affiliation: | YANG Li(Shanghai Research Institute of Materials,Shanghai 200437,China) |
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| Abstract: | The copper alloy air valve of truck tires in the use of 1~3 months later had cracked partly.The cracking reasons was investigated by means of macroscopic examination,chemical composition analysis,metallographic examination,hardness testing,fracture analysis and energy spectrum analysis.The results showed that the air valve cracking was stress corrosion cracking under the union action of stress and environment medium;the reason was stress relief annealing was not done to the air valve after cold working deformation. |
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| Keywords: | truck tire air valve copper alloy stress corrosion cracking |
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