AZ31マグネシウム合金板の一軸および二軸変形に及ぼす焼なまし温度の影響 [in Japanese] The influence of the annealing temperature on uniaxial and biaxial deformation of the AZ31 magnesium alloy sheet [in Japanese]
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The AZ31 magnesium alloy sheet which showed the highest elongation among the magnesium alloy sheets was used. An examination of this alloy sheet was done if any influence was exerted on stretch tests that changes in annealing temperature were uniaxial and biaxial deformation. The way of making it changes to 623 K∼773 K and being cooled down went for annealing temperature in the oil quenching. The changes of 0.2% proof stress and tensile strength is not seen by cooling in oil by 723 K after heat-treating for 1 hour. However, stretch rose gradually in the test temperatures and decreased rapidly at 773 K. The n-value showed the transition point during the uniform deformation, and these values before and after the transition point showed higher values at 723 K. This trend was similar to those of elongation. As for the forming limit curve, a forming limit is extended and a relatively high value was exhibited. As for press forming, it is thus thought the thing it can be expected to get a high forming limit based on these results.
- J. Japan Inst. Light Metals
J. Japan Inst. Light Metals 50(2), 60-64, 2000-02-28
The Japan Institute of Light Metals