| 不同温升率下预载H62黄铜破坏的实验研究 |
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| 引用本文： | 陈斌,彭向和,杨运民,王军,陈裕泽,尹益辉,陈刚. 不同温升率下预载H62黄铜破坏的实验研究[J]. 金属学报, 2001, 37(12): 1256-1260 |
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| 作者姓名： | 陈斌 彭向和 杨运民 王军 陈裕泽 尹益辉 陈刚 |
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| 作者单位： | 1. 重庆大学A区工程力学系,
2. 中国工程物理研究院结构力学研究所, |
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| 基金项目： | 国家自然科学基金19672059，中国工程物理研究院基金98030412项目资助 |
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| 摘 要： | 使用Gleeble 1500热力模拟实验系统研究了H62黄铜试件在不同温升率及不同预载应力下的失效温度与破坏规律，结合试件断口附近的金相显微组织观察，分析了材料的破坏机理，结果表明，温升率及预载应力对H62黄铜的失效温度与破坏有明显影响，在相同的预载应力下，温升率越高材料的失效温度越低，在相同的温升率下，预载应力越高材料的失效温度也越低，对材料微观组织及缺陷的分析表明，高温升率下材料微缺陷的形成与扩展是材料性能降低的重要原因。
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| 关 键 词： | 黄铜 预载 温升率 失效温度 |
| 文章编号： | 0412-1961(2001)12-1256-05 |
| 修稿时间： | 2001-03-12 |
AN EXPERIMENTAL INVESTIGATION TO THE EFFECT OF HEATING RATE ON THE FAILURE OF PRE-LOAD H62 BRASS |
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| CHEN Bin,PENG Xianghe,YANG Yunmin,WANG Jun. AN EXPERIMENTAL INVESTIGATION TO THE EFFECT OF HEATING RATE ON THE FAILURE OF PRE-LOAD H62 BRASS[J]. Acta Metallurgica Sinica, 2001, 37(12): 1256-1260 |
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| Authors: | CHEN Bin PENG Xianghe YANG Yunmin WANG Jun |
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| Abstract: | The response and failure of H62 brass specimens subjected to different levels of pre- stress and heating rates were systematically investigated using a Gleeeble-1500 thermal mechanical material testing system. The metallurgraph near fracture of the tested material were also observed and analyzed. Experimental results show that the increase of either pre-stress or heating-rate decreases the failure temperature, which is related with obvious increase of microdefects in the pre-load material. Metallurgraphic analysis also shows that high heating rate may remarkably increase the damage of the material. |
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| Keywords: | H62 brass preloading heating rate failure temperature |
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