| ZTM630镁合金双级时效实验研究 |
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| 引用本文： | 王娜娜,周吉学,刘玉,赵东清,马百常,杨院生. ZTM630镁合金双级时效实验研究[J]. 山东科学, 2018, 31(3): 34-38. DOI: 10.3976/j.issn.1002-4026.2018.03.006 |
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| 作者姓名： | 王娜娜 周吉学 刘玉 赵东清 马百常 杨院生 |
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| 作者单位： | 1.齐鲁工业大学（山东省科学院），山东省科学院新材料研究所，山东省轻质高强金属材料重点实验室，山东省汽车用镁合金轻量化示范工程技术研究中心， 山东 济南 250014；2. 中国科学院金属研究所，辽宁 沈阳 110016 |
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| 基金项目： | 山东省重点研发计划（2017CXGC0404）；国家重点研发计划（2016YFB0301105） |
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| 摘 要： | 通过改变Mg-6Zn-3Sn-0.5Mn合金终时效时间，利用金相显微镜、扫描显微镜、透射电子显微镜观察挤压态ZTM630合金在双级时效后的微观组织特征。结果表明，该合金比较适宜的双级时效参数为90 ℃×12 h+180 ℃×8 h，在该参数下合金的抗拉强度、伸长率分别为383.1 MPa、7.667%。双级时效之后，在基体与晶界处都有弥散细小的析出相析出，主要为Mg2Sn、MgZn2相化合物。在拉伸过程中弥散细小析出相的析出强化作用和阻碍晶粒移动产生的强化作用，使得合金的力学性能更优。
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| 关 键 词： | 双级时效 微观组织 Mg-Zn-Sn-Mn合金 |
| 收稿时间： | 2017-10-08 |
Experimental study on two-stage aging treatment of ZTM630 magnesium alloy |
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| WANG Na-na,ZHOU Ji-xue,LIU Yu,ZHAO Dong-qing,MA Bai-chang,YANG Yuan-sheng. Experimental study on two-stage aging treatment of ZTM630 magnesium alloy[J]. Shandong Science, 2018, 31(3): 34-38. DOI: 10.3976/j.issn.1002-4026.2018.03.006 |
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| Authors: | WANG Na-na ZHOU Ji-xue LIU Yu ZHAO Dong-qing MA Bai-chang YANG Yuan-sheng |
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| Affiliation: | 1.Shandong Engineering Research Centre for Lightweight Automobiles Magnesium Alloy, Shandong Provincial Key Laboratory for High Strength Lightweight Metallic Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Science), Jinan 250014, China; 2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016，China |
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| Abstract: | By changing the final aging time, the microstructure evolution and mechanical properties of extruded Mg-6Zn-3Sn-0.5Mn alloy were investigated by means of optical electron microscopy, scanning electron microscopy and transmission electron microscopy. Results showed that through the two step aging treatment, the suitable parameter was 90 ℃×12 h+180 ℃×8 h. Under this parameter, ultimate tensile strength and elongation of the alloy reached 383.1 MPa,7.667%, respectively. After two-step aging treatment, there were dispersed and fine precipitates precipitated in matrix and grain boundaries, which were mainly of Mg2Sn and MgZn2 phases. During the process of stretching, the precipitation strengthen effect of dispersed fine precipitated phase and the strengthening effect inhibiting the grain movement made the mechanical properties of the alloy better. |
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| Keywords: | Mg-Zn-Sn-Mn alloy two-step aging treatment microstructure |
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