Ken-ichiro Aoki1, Mototsugu Katsuta1 and Makoto Sugamata1
1Department of Mechanical Engineering, Faculty of Industrial Technology, Nihon University, Narashino
This report dealt with the additional effect of third element on deep drawing properties and ear after drawing of Al-Mg system alloy sheets.
The X-ray texture, ``n'' value and ``r'' value of tarnary alloy sheets to which very small amounts of Mn, Cr, Zr and Ti were added were measured.
The results obtained were as follows:
(1) Very small additions of Mn, Cr, Zr and Ti as third elements promoted refinement of the grain, and increased the values of tensile strength and 0.2% proof stress. Especially, the addition of Mn and Cr was effective for grain refinement.
(2) Very small additions of Cr, Zr and Ti as third elements tended to reduce deep drawing properties with an increase in alloying addition. However, Al-5.85%Mg-0.14%Mn alloy sheets did not reduce the deep drawing properties but increase the strength.
(3) The ear emergent direction and earing ratio were fairly compatible with the ``r'' value, and with an increase in the addition of the third element, the earing ratio appeared to be reduced.
(3) As to recrystallization texture, (310)[ 32] and (001) appeared strongly and all ears emerged in a 45°ree direction.
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