Effect of Cooling Conditions on Grain Size of AZ91 Alloy

材料科学技术（英文）, 2007, 23(5): 645-649.

^1, , ^2, , ^3, , ^4, , ^5,

1.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;School of Architecture Engineering, Harbin University of Engineering, Harbin 150001, China

2.Department of Materials and Process Engineering, University of Waikato, Private Bag 3105, Hamilton, New Zealand

3.Faculty of Engineering & Surveying, The University of Southern Queensland, Toowoomba, Queensland 4350, Australia

4.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

5.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Effect of Cooling Conditions on Grain Size of AZ91 Alloy

Keywords： Superheat

The grain size of AZ91 alloy was investigated in terms of the effects of cooling rate, superheat and steel gauze. It was found that rapid cooling rate and low superheat favoured the achievement of fine grain structures. The gauze had a less profound effect on the grain size in AZ91 magnesium alloy than that in A356 aluminum alloy. The mechanisms by which these factors affect grain refinement of AZ91 have also been discussed.

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Effect of Cooling Conditions on Grain Size of AZ91 Alloy

参考文献