热加工过程对Al-Mg-Si-Cu合金组织、织构演变及力学性能的影响（英文）

发布时间：2018-10-31 13:06

【摘要】：系统研究热加工过程对Al-Mg-Si-Cu合金组织、织构及力学性能的影响。通过工艺优化获得了力学性能各向异性很弱的合金板材。热轧和冷轧板材的显微组织均呈拉长态组织。热轧板表层的织构组分以H{001}110和E{111}110为主,而1/4层和中间层的织构以β取向线为主。与热轧板相比,一次冷轧板的β取向线密度增加而表层的H取向减弱。经中间退火后,形变织构基本消失,最终冷轧后的织构以β取向线为主。随着厚度的减小,织构梯度逐渐变弱。合金板材固溶处理后的再结晶织构组分仅含有cubeND{001}310织构。此外,分析了热加工过程、显微组织、织构以及力学性能之间的关系。
[Abstract]:The effect of hot working process on microstructure, texture and mechanical properties of Al-Mg-Si-Cu alloy was studied systematically. The alloy sheet with weak anisotropy of mechanical properties was obtained by process optimization. The microstructure of hot rolled and cold rolled sheet is elongated. The texture composition of the surface layer of hot rolled plate is mainly H {001} 110 and E {111} 110, while the texture of 1 / 4 layer and middle layer is 尾 -orientation line. Compared with the hot rolled sheet, the 尾 -orientation linear density of the first cold rolled plate increases, but the H orientation of the surface layer decreases. After intermediate annealing, the deformation texture disappeared basically, and the final cold rolled texture was dominated by 尾 -orientation line. With the decrease of thickness, the texture gradient becomes weaker. The recrystallization texture of alloy sheet after solid solution treatment contains only cubeND {001} 310 texture. In addition, the relationships among hot working process, microstructure, texture and mechanical properties were analyzed.
【作者单位】：北京科技大学新金属材料国家重点实验室;
【基金】：Project(2013AA032403) supported by the National High-Tech Research and Development Program of China Project(YETP0409) supported by the Beijing Higher Education Young Elite Teacher Project in 2013,China Project(51301016) supported by the National Natural Science Foundation of China
【分类号】：TG339

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