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| Effect of Scandium on Microstructure and Property of AZ91 Magnesium Alloy |
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Received:November 27, 2012
Revised:November 28, 2012
Accepted:November 29, 2012
Published Online:May 21, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.06.014 |
| KeyWord:AZ91; magnesium alloy; scandium; microstructure; mechanical property; corrosion property |
| Author | Institution |
| KONG Fan-xiao[sub_s][sub_e] |
广西工学院职业技术教育学院 |
| YAO Su-juan[sub_s] |
河南神火集团有限公司 |
| CHU Bing-wu[sub_s][sub_e] |
广西工学院职业技术教育学院 |
| HU Ying-chun[sub_s][sub_e] |
中国铝业股份有限公司郑州研究院 |
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| Abstract: |
| The phase composition and microstructure of scandium in AZ91 alloy were studied. The effects of scandium on the microstructure and property of AZ91 alloy were investigated. The results show that scandium generates Al3Sc phase and refines the dendritic structure of crystal grain. The optimum tensile strength at room temperature and 200 ℃ are improved to 265.4 MPa and 161.1 MPa respectively with the additive amount of scandium of 0.6%. The current density of self-corrosion of alloy drops markedly after addition of scandium, while the corrosion potential rises slightly. |
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