中南大学学报（自然科学版）2018，Vol.49Issue(6)：1357-1365,9.DOI:10.11817/j.issn.1672-7207.2018.06.006
Zr质量分数对7085铝合金组织和性能各向异性的影响
Effects of Zr mass fraction on microstructure properties of anisotropy of 7085 aluminum alloy
摘要
Abstract
The influence of the content of Zr on the anisotropy of 7085 alloy was studied by room temperature tensile test, corrosion test and optical microscopy(OM), scanning electron microscopy(SEM), and transmission electron microscopy (TEM). The results show that the strength of the alloy with the increase of Zr mass fraction first increases and then decreases. When Zr content is 0.12% (mass fraction), the strength of the alloy in peak, The addition of Zr inhibits the recrystallization of the alloy and improves its strength and exfoliation corrosion resistance. The mechanics properties of the extruding direction(L-T) is better than that of transverse(T-L). When Zr mass fraction is 0.12%, the alloy has minimum anisotropy. The corrosion resistance of cross section is superior to the long section. When Zr mass fraction is 0.14%, the alloy has the best corrosion resistance and minimum anisotropy. The anisotropic properties of the alloy with the increase of Zr mass fraction first increases and then decreases. The optimal Zr content is in the range of 0.12%-0.14%, which can maintain high strength and corrosion resistance and has low anisotropy.关键词
7085铝合金/Zr元素/各向异性/力学性能/剥落腐蚀Key words
7085 aluminum alloy/Zr element/anisotropy/mechanical properties/exfoliation corrosion分类
矿业与冶金引用本文复制引用
陈善达,焦慧彬,陈送义,黄兰萍,陈康华,马云龙,王会平..Zr质量分数对7085铝合金组织和性能各向异性的影响[J].中南大学学报（自然科学版）,2018,49(6):1357-1365,9.基金项目
国家重点研发计划(2016YFB0300801) （2016YFB0300801）
国家重点基础研究发展计划(973计划)项目(2012CB619502) （973计划）
国家自然科学基金资助项目(51327902,51201186)(Project(2016YFB0300801) supported by the National Key Research and Development Program of China （51327902,51201186）
Project(2012CB619502) supported by the National Basic Research Development Program (973 Program) of China （2012CB619502）
Projects(51327902, 51201186) supported by the National Natural Science Foundation of China) （51327902, 51201186）
