Al板の壓延條件と深絞り耳との關係について(第3報)(99.7% Alの耳と再結晶集合組織)

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(1) Ears of Al plates cold-rolled increase their height linearly with the effective strain of the cold-rolling reduction. (2) After recrystallization, ears of Al plates cold-rolled about 50% are occurred by (100)[100]+(110)[110] texture. But when annealing temperature is higher (600℃) their height becmes low, because only (110)[110] texture must bring about ears. (3) Ears of Al plates cold-rolled 80% are occurred by (100)[100] texture, but the height of ears is constant during annealing temperature is 375℃〜600℃, because the number of grains orientated to (100)[100] does not change. (4) 45° ears appeared in recrystallized plates cold-rolled 90% or 92% are due to (110) [112] like texture (at angle 40°〜50°in Fig.6), but they diminish with the increasing of (100)[100] texture. (5) On Al plates cold-rolled 92% or more, behaviors of ears may be explained as well. (6) Annealing temperature where 45° ears change to 90° ears increases almost linearly with the effective strain of plates cold-rolled finally over 90%. (7) The smaller the grain size before final cold-rolling, the higher the 0° ears, 90° ears and the regularity of (100)[100]. (Received September 12, 1951)
宇宙航空研究開発機構の論文
1951-11-30