Tensile properties of hot rolled Mg_(97)Zn_1Y_2 alloy sheets at elevated temperatures

TG1; The elevated temperature tensile properties of Mg_(97)Zn_1Y_2 magnesium alloy sheets, hot rolled at 390, 420 and 450 ℃ respectively, were tested in a temperature range from room temperature to 250 ℃ with a strain rate of 1.0×10~(-3) s~(-1). The results show that the variations in yield strength...

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Bibliographic Details
Published in:中国有色金属学报（英文版） 2010, Vol.20 (1), p.43-46
Main Authors: SU Zhen-guo, NIU Xiao-dong, AN Jian, LI Guang-yu
Format: Article
Language:English
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Summary:TG1; The elevated temperature tensile properties of Mg_(97)Zn_1Y_2 magnesium alloy sheets, hot rolled at 390, 420 and 450 ℃ respectively, were tested in a temperature range from room temperature to 250 ℃ with a strain rate of 1.0×10~(-3) s~(-1). The results show that the variations in yield strength for Mg_(97)Zn_1Y_2 magnesium alloy sheets hot rolled at 390 ℃ and 420 ℃ with temperature resemble each other due to their similar morphology of the chain-shaped strengthening phase. The yield strength maintains at a high level of 283 MPa before 200 ℃ and decreases significantly at 250 ℃. Despite of the fine lamellar structure of Mg_(97)Zn_1Y_2 magnesium alloy sheet hot rolled at 450 ℃, its yield strength decreases linearly owing to occurrence of the coarse grain, and drops to 239 MPa at 250 ℃. The elongation for all hot rolled Mg_(97)Zn_1Y_2 magnesium alloy sheets increases slightly with increasing testing temperature.
ISSN:1003-6326
DOI:10.1016/S1003-6326(09)60094-7