| PM Al—Li合金高应变速率超塑变形过程中的孔洞行为 |
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| 引用本文： | 王丽凤,王永生,姜华,马江.PM Al—Li合金高应变速率超塑变形过程中的孔洞行为[J].佳木斯大学学报,1997(1). |
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| 作者姓名： | 王丽凤 王永生 姜华 马江 |
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| 作者单位： | 哈尔滨理工大学(王丽凤)，黑龙江电子研究所(王永生，马江)，佳木斯造纸厂(姜华) |
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| 摘 要： | 用扫描电子显微镜及拉伸试验研究了PMAl—Li合金高应变速率超塑变形过程中孔洞的形核、长大及其影响因素．结果表明，孔洞主要在三角晶界和晶界突起处形核，其长大由周围的塑性变形控制，随应变速率的提高，孔洞的形核率和长大速率增加；随变形温度的升高，孔洞的长大速率增加，材料对孔洞容纳性提高．
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| 关 键 词： | PMAl—Li合金 高应变速率超塑变形 孔洞行为 |
PM AL-LI ALLOY'S HOLE PROPERTY IN THE HIGH STRAIN SUPER PLASTIC DEFORMATION PROCESSING |
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| Wang Lifeng, Wang Yongsheng, Jiang Hua ,Ma Jiang.PM AL-LI ALLOY''''S HOLE PROPERTY IN THE HIGH STRAIN SUPER PLASTIC DEFORMATION PROCESSING[J].Journal of Jiamusi University(Natural Science Edition),1997(1). |
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| Authors: | Wang Lifeng Wang Yongsheng Jiang Hua Ma Jiang |
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| Institution: | Wang Lifeng; Wang Yongsheng; Jiang Hua ;Ma Jiang(Harbin University of Technology 150076) (Paper Manufacturer of Jiamisi) |
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| Abstract: | The paper used SEM and tenslle test and studide PM Al-Li alloy'snucleation,growth and influence factor of the hole in the high strain rate super plasticdeformation processing. The results show that the hole nucleat chiefly in triangle crystalboundary and crystal boundary rise high opsition. The hole growth in controlled by surrounding plastic defornation, the nucleation and growth rate incrase of the hole along.with the improve of strain rate. The growth rate of hole increase and material toleratehole property increase along with the deformative rise. |
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| Keywords: | PM Al-Li alloy high strain super plastic deformation hole property |
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