曹零勇,郭明星,崔华,蔡元华,汪小峰,庄林忠,张济山

• 1:北京科技大学新金属材料国家重点实验室
• 2:北京科技大学材料科学与工程学院

摘要(Abstract)：

对6111铝合金板材T4P态(预时效后室温放置)和烤漆态(185℃×20 min)沿不同方向的力学性能和织构差异进行研究,结果表明:合金两个状态沿不同方向的力学性能存在明显差异,屈服强度沿轧向最高,分别为171 MPa和261 MPa,烘烤增量达90 MPa,而伸长率却在与轧向呈45°方向最高;T4P态r和n值均沿轧向最高,而与轧向呈45°方向最低;合金T4P态已完全再结晶,表层晶粒尺寸小于中间层,纵截面再结晶晶粒长宽比高于横截面的;合金板材沿厚度方向存在明显的织构梯度,表层以{001}<100>Cube织构和β取向线上的{114}<131>织构为主,而中间层除{001}<100>Cube织构外,还存在旋转立方织构{001}<310>;据此建立了6111铝合金板材不同状态力学性能和织构之间的定量关系。

关键词(KeyWords)： 汽车材料;6xxx系铝合金;各向异性;织构;成形性能

Abstract:

Keywords:

基金项目(Foundation): 北京市自然科学基金(2112030);; 新金属材料国家重点实验室自主课题(2012Z-07)

作者(Author): 曹零勇,郭明星,崔华,蔡元华,汪小峰,庄林忠,张济山

DOI: 10.13289/j.issn.1009-6264.2013.07.033

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