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Research on the Drawability Properties of AZ31B Magnesium Alloy Sheets on Warm Forming

Author: WangLiDong
Tutor: MoDeXiu
School: Shandong University of Technology
Course: Materials Processing Engineering
Keywords: AZ31B magnesium alloy Stamping performance LDR value Equal channel angular rolling
CLC: TG389
Type: Master's thesis
Year: 2009
Downloads: 153
Quote: 2
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Abstract


In this paper, the warm forming equal channel angular rolling process AZ31B magnesium alloy sheet plastic stamping performance . By the tensile test , rolling test , drawing experiment measured two different temperatures rolling prepared AZ31B magnesium alloy sheet stamping performance indicators and comparative analysis of the deformation temperature and rolling process of plate flexor ratio , strain hardening Index , the plastic strain ratio as well as the impact of the LDR value . As measured by the respective performance parameters through research and analysis , the conclusion is as follows: (1) at 300 ° C hot-rolled , hot rolled properties Preferably, the reduction ratio reaches a maximum of 32.5% , the rolling capacity than 250 ° C the Shihai better reduction rate than 150 ℃ increased nearly doubled . When deformation temperature greater than 300 ° C , ( ? ) Value is less than 1 , so to get a good stamping performance , AZ31B magnesium alloy sheet drawing temperature should not exceed 300 ° C . ( 2) compared with ordinary rolling process prepared AZ31B magnesium alloy sheet AZ31B magnesium alloy sheet along the rolling direction and other channel angular rolling process prepared on the yield strength , yield ratio and the plastic strain ratio decreases, while the The strain hardening index is increased. Description channel angular rolling process can effectively improve the performance of AZ31B magnesium alloy sheet metal forming . ( 3 ) the ordinary rolled prepared magnesium alloy sheet LDR value reaches a maximum at 300 ℃ , the maximum value of 2.83 . Channel angular rolling process prepared AZ31B magnesium alloy sheet after LDR values ??up to 2.95 , further evidence has better thermal drawing performance after channel angular rolling process prepared AZ31B magnesium alloy sheet .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Cold stamping ( sheet metal processing) > Non-ferrous metal and alloy materials stamping
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