平面应力状态下铝合金板的织构演化规律

基金项目:

国家杰出青年基金资助项目(50225520)

详细信息

Evolution Rule of Aluminum Alloy Textures under Plane Stress State

摘要: 为掌握铝合金5052织构演化规律,通过双向拉伸试验模拟铝合金板材受平面应力作用下的单向拉伸、平面应变、等双拉三种典型应变状态,获得取向分布函数并进行了定量分析.结果表明：该板材中轧制织构密度普遍较弱而再结晶织构立方取向、R取向及D取向密度较强;在不同应力状态下织构随着应变比绝对值增加而聚集;织构体积分数随应变比的变化不大,随机织构占有较大的体积分数.
- 铝合金 /
- 平面应力 /
- 双向拉伸 /
- 织构演化
Abstract: The crystallographic textures affect the formability microscopically of material.In order to master the evolution law of Al 5052,three plane stress states that were uniaxial tensile,plane strain and equal-biaxial tensile were obtained by biaxial tensile loading.After that,the textures of three specimens and the original material were measured and the orientation distribution functions(ODF) were obtained and quantitatively analyzed.The results show that,the ODF density of rolling textures is weak while the recrystallization Cubic,R and D textures exist;textures assemble with the increasing of absolute value of strain ratio;volume fraction of textures don’t change considerably and the random textures dominate in the whole volume.
- aluminum alloy /
- plane stress /
- biaxial tensile test /
- texture evolution

[1]	毛卫民.金属材料的晶体学织构与各向异性[M].北京:科学出版社,2002.
[2]	Takahashi H,Motohashi H,Tsuchida S.Development of plastic anisotropy in rolled aluminium sheets[J].Int J Plasticity,1996,12(7):935-949.
[3]	毛卫民,马全仓,冯惠平,等.冲压铝板塑性应变比的在线检测技术[J].中国有色金属学报,2006,16(7):1149-1154.
[4]	Mitsutoshi Kuroda.Effects of texture on mechanical properties of aluminum alloy sheets and texture optimization strategy[J].AIP Conference Proceedings,2005,778A(5):445-450.
[5]	崔令江.汽车覆盖件冲压成形技术[M].北京:机械工业出版社,2003.
[6]	万敏,洪强,吴向东,等.十字形试件双向拉深试验系统建立及加载精度分析[J].机械工程学报,2001,31(1):57-62.
[7]	吴向东,万敏,周贤宾.十字形双向拉伸试验有限元模拟及分析[J].塑性工程学报,2001,8(2):57-59.