Effects of Process Parameters on Room-Temperature Deep Drawability of AZ31B Magnesium Alloy Sheets with Suppressed Basal Texture

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  • Chino Yasumasa
    Multi-Material Research Institute, National Institute of Advanced Industrial Science and Technology
  • Huang Xinsheng
    Multi-Material Research Institute, National Institute of Advanced Industrial Science and Technology
  • Saito Naobumi
    Multi-Material Research Institute, National Institute of Advanced Industrial Science and Technology
  • Nishiwaki Takeshi
    Department of Mechanical Engineering, School of Engineering, Daido University
  • Mohri Takeshi
    Material Technology Department, Nagoya Municipal Industrial Research Institute
  • Matsuda Mikio
    Asahi-Seiki Manufacturing Co. Ltd.

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<p>The effects of process parameters on room-temperature (RT) deep drawability were investigated for AZ31B magnesium alloy sheets, in which the formation of basal texture was suppressed by high-temperature rolling. When the blank holder force was set to the minimum value to prevent wrinkling, high RT drawability was obtained. In particular, a significantly high limiting draw ratio (LDR) of 1.83 was obtained by the optimization of the process parameters of the servo-press machine. At higher punch speeds, the drawability tended to be deteriorated; however, a high LDR of 1.72 was obtained even at a high punch speed of 50 mm/s by the optimization of the process parameters of the servo-press machine. Furthermore, when the punch speed in the initial stage of deep drawing was reduced, it was possible to perform deep drawing without fracture even if the punch speed in the later stages was increased. The results of the study of the effect of lubricants indicated that relatively high RT drawability was obtained when molybdenum disulfide was utilized. It was also suggested to be important to select a lubricant that reduces punch load and does not delaminate during deep drawing.</p><p> </p><p>This Paper was Originally Published in Japanese in J. JSTP 64 (2023) 13–18.</p>

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  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 65 (3), 346-351, 2024-03-01

    公益社団法人 日本金属学会

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