| 细晶1420铝锂合金超塑性能试验研究 |
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| 引用本文： | 张艳苓,郭和平,李志强,张西涛,李琪.细晶1420铝锂合金超塑性能试验研究[J].塑性工程学报,2009,16(4). |
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| 作者姓名： | 张艳苓 郭和平 李志强 张西涛 李琪 |
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| 作者单位： | 1. 北京航空制造工程研究所,金属成形技术研究室,北京,100024
2. 海军驻阎良地区航空军代表室,西安,710089 |
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| 摘 要： | 文章以采用双级时效制度和转向轧制工艺制备的细晶1420铝锂合金为研究对象,通过恒应变速率超塑拉伸试验,研究了合金的单轴超塑拉伸性能。结果表明,在460℃~520℃温度条件下和1×10-4s-1~5×10-3s-1应变速率范围内,细晶1420铝锂合金表现出良好的超塑性,在温度460℃、应变速率1×10-4s-1条件下,延伸率达到650%。利用光学显微镜和透射电镜等检测手段,对超塑变形后材料的组织进行了观察和分析。
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| 关 键 词： | 细晶1420铝锂合金 超塑性 延伸率 微观组织 |
The experimental research on superplastic performance of fine-grained 1420 Al-Li alloy |
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| ZHANG Yan-ling,GUO He-ping,LI Zhi-qiang,ZHANG Xi-tao,LI Qi.The experimental research on superplastic performance of fine-grained 1420 Al-Li alloy[J].Journal of Plasticity Engineering,2009,16(4). |
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| Authors: | ZHANG Yan-ling GUO He-ping LI Zhi-qiang ZHANG Xi-tao LI Qi |
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| Abstract: | The superplasticity of fine-grained 1420 Al-Li alloys which prepared by two-stage aging and turning rolling technology was studied by constant-strain-rate tensile test. The results show that: good superplasticity was attained at temperature range of 460℃～520℃ and deformation strain rate 1×10~(-4)s~(-1)～5×10~(-3)s~(-1), and the tensile elongation 650 ～ was obtained at the tem-perature of 460℃ and strain rate of 1×10~(-4)s~(-1). Furthermore, the microstructures of after superplastic deformation were investi-gated by means of OM and TEM. |
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| Keywords: | fine-grained 1420 Al-Li alloy superplasticity elongation microstructure |
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