供应状态LY12CZ 铝合金具有超塑性,平均晶粒尺寸为15.3μm,在490℃,(?)_0=1.67×10~(-4)s~(-1)时,延伸率为346%,m 值为0.52—0.6。该材料为孔洞敏感材料,孔洞长大规律可用本文提出的二阶段孔洞模型描述。同时考虑材料的应变速率敏感性(m)和孔洞长大效应,可从理论上预测该材料的延伸率。
LY12CZ alluminium alloy is a superplastic material as its commercial state.With a gram size of 15.3 μm and under the condition of 490℃ and ε_0=1.67x10~(-4)s~(-1),themaximum total elongation of this material arrives at 346% and its m-value at 0.52—0.6.This
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