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| Preparation of Fine-grained Mg-Al-Ti-C Master Alloy and Its Effect on Microstructure and Properties of AZ91D Alloy |
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Received:November 04, 2018
Revised:November 10, 2018
Accepted:November 12, 2018
Published Online:January 24, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.02.013 |
| KeyWord:two-step method; copper mold inject casting; Mg-Al-Ti-C master alloy; AZ91D alloy |
| Author | Institution |
| Meng Hong-jie |
唐山工业职业技术学院 机械工程系 |
| Dong Tian-shun |
河北工业大学 材料科学与工程学院 |
| YE Xiaoying |
唐山工业职业技术学院 |
| LIU Li |
河北工业大学 材料科学与工程学院 |
| Wang Tuo |
河北工业大学 材料科学与工程学院 |
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| Abstract: |
| Mg-Al-Ti-C master alloy with particle reinforcement and fine crystal strengthening was prepared by two-step method and copper mold inject casting. Effects of Mg-Al-Ti-C master alloy on microstructure and properties of AZ91D were investigated by means of OM, SEM, XRD, hardness test and tensile test. The results show that Mg-Al-Ti-C master alloy was produced by two-step method, and TiC particles are dispersedly distributed in Mg-Al-Ti-C master alloy with their sizes becoming much smaller. After treatment with Mg-Al-Ti-C master alloy, tensile strength and hardness of AZ91D rise by 19.8% and 64.9% respectively. Besides particle reinforcing effect, TiC particles can also be used as heterogeneous core of AZ91D to strengthen substrate. |
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