Mg sheet metal forming: Lessons learned from deep drawing Li and Y solid-solution alloys
Mg sheet metal forming: Lessons learned from deep drawing Li and Y solid-solution alloys
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DOI：
10.1007/s11837-006-0026-8
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发表时间：
2006-05-01
期刊：
影响因子：
2.6
通讯作者：
Horton, JA
中科院分区：
文献类型：
--
作者：
Agnew, SR;Senn, JW;Horton, JA
当前镁合金在环境温度下的板材成形性差;然而，在适度升高的温度下的成形性可以是优异的。采用圆筒形拉深试验对常规AZ 31 B合金与含锂或钇固溶体的AZ 31 B合金的温成形特性进行了比较。虽然这两种类型的实验合金可以有更好的室温延展性（ε（f）类似于25-30%）比AZ 31 B，只有锂合金具有可比或更好的深冲能力的结果进行了讨论的板材各向异性特别注意的是，镁合金表现出不良的弯曲延展性，由于其各向异性和机械孪晶诱导的拉伸-压缩强度不对称的事实。
The sheet formability of current magnesium alloys at ambient temperatures is poor; however, the formability at moderately elevated temperatures can be excellent. Cylindrical cup drawing tests are used to compare the warm forming characteristics of conventional alloy AZ31B with alloys containing lithium or yttrium solid solutions. While both types of experimental alloy can have better room-temperature ductility (epsilon(f)similar to 25-30%) than AZ31B, only the lithium alloy has comparable or better deep-drawing capacity The results are discussed in terms of the sheet anisotropy Particular attention is drawn to the fact that magnesium alloys exhibit poor bending ductility due to their anisotropy and mechanical twinning-induced tension-compression strength asymmetry.