| 时效对Mg-Zn-Nd-Zr-Cd合金力学特性的影响 |
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| 引用本文： | 杨平旺,刘楚明,王洪海.时效对Mg-Zn-Nd-Zr-Cd合金力学特性的影响[J].兵器材料科学与工程,2012,35(3):5-8. |
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| 作者姓名： | 杨平旺 刘楚明 王洪海 |
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| 作者单位： | 中南大学材料科学与工程学院,湖南长沙,410083;洛阳空空导弹研究院,河南洛阳,471009 |
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| 摘 要： | 采用光学显微镜、XRD衍射分析仪、SEM扫描电镜、维氏硬度计、透射电子显微镜、万能拉伸试验机等仪器研究时效工艺对合金Mg-3.8Zn-2.8Nd-0.6Zr-0.6Cd力学特性的影响。结果显示,时效后合金强度有较大的提高,伸长率略有下降。采取双级时效90℃×10 h+150℃×8 h热处理,合金的屈服强度与抗拉强度分别达到320 MPa和350 MPa。双级时效热处理时,因为分解产物的数量更多、尺寸更小,因此强化效果要比单级时效的更明显。
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| 关 键 词： | 合金Mg-3.8Zn-2.8 Nd-0.6Zr-0.6Cd 双级时效 强度 |
Effect of aging on mechanical property of Mg-Zn-Nd-Zr-Cd alloy |
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| YANG Pingwang
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LIU Chuming
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WANG Honghai.Effect of aging on mechanical property of Mg-Zn-Nd-Zr-Cd alloy[J].Ordnance Material Science and Engineering,2012,35(3):5-8. |
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| Authors: | YANG Pingwang LIU Chuming WANG Honghai |
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| Affiliation: | 1.School of Materials Science and Engineering,Central South University,Changsha 410083,China; 2.China Airborne Missile Academy,Luoyang 471009,China) |
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| Abstract: | The effect of aging on mechanical property of as-extruded Mg-3.8Zn-2.8Nd-0.6Zr-0.6Cd alloy was studied using the Optical Microscope(OM),Scanning Electron Microscope(SEM),X-Ray Diffractometer(XRD),Vickers Hardness tester,Transmission Electron Microscope(TEM) and universal tensile test machine.The results show that the strength improves greatly with a little drop of elongation.The yield strength and ultimate tensile strength of alloy reach 320 MPa and 350 MPa through two-steps aging,including pre-aging at 90 ℃ for 10 h,followed by aging at 150 ℃ for 8 h,respectively.The effect of two-steps aging is more obvious than that of single aging with finer and more precipitates. |
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| Keywords: | Mg-3 8Zn-2 8Nd-0 6Zr-0 6Cd alloy two-steps aging strength |
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