航空材料学报2016，Vol.36Issue(5)：21-25,5.DOI:10.11868/j.issn.1005-5053.2016.5.004
预拉伸处理对2 A97薄板组织和性能的影响
Effect of Pre-sretching Processing on Microstructures and Properties of 2 A97 Al-Li Alloy
摘要
Abstract
The effect of pre-sretching processing before artificial aging on the microstructures and properties of 2A97 Al-Li alloy was in-vestigated by using tensile test,corrosion test and transmission electron microscope( TEM) observations. The results show that under the same aging process, the tensile strength and the corrosion property of 2A97 Al-Li alloy are greatly increased after 3% pre-sretching;the tensile strength increases 32 MPa, and intergranular corrosion level changes to pitting corrosion. The pre-sretching promotes the T1 phase precipitation and makes its distribution more dispersive and homogeneous at matrix, reducing the content of the δ′phase, while the precipitation of equilibrium phase is restrained during the aging process, consequently improving the tensile strength and the corro-sion property.关键词
2A97铝锂合金/预拉伸/析出相/拉伸性能/晶间腐蚀Key words
2A97 Al-Li alloy/pre-stretching/precipitated phase/tensile property/intergranular corrosion分类
矿业与冶金引用本文复制引用
于娟,陆政,李国爱,冯朝辉..预拉伸处理对2 A97薄板组织和性能的影响[J].航空材料学报,2016,36(5):21-25,5.基金项目
国家自然科学基金(51374187,51474195) （51374187,51474195）
