固溶前预变形对6013型铝合金晶粒取向和组织性能的影响  

Effect of pre-deformation before solid solution treatment on grain orientation,microstructure and properties of 6013 type aluminum alloy

作　　者：张福豹[1,2] 许晓静[2] 刘志刚[2] 居志兰[1] 金宇阳 Zhang Fubao;XHXlaojing;Liu Zhigang;Ju Zhilan;Jin Yuyang(School of Mechanical Engineering,Nantong University,Nantong Jiangsu 226019,China;Engineering Institute of Advanced Manufacturing and Modem Equipment Teehnology,Jiangsu University,Zhenjiang Jiangsu 212013,China)

机构地区：[1]南通大学机械工程学院,江苏南通226019 [2]江苏大学先进制造与装备研究院,江苏镇江212013

出　　处：《金属热处理》2018年第9期133-138,共6页Heat Treatment of Metals

基　　金：国家自然科学基金(51074079);江苏省普通高校研究生科研创新计划(CXLX12_0620);江苏省高校自然科学基金(16KJD460006);江苏省重点研发项目(BE2016116);南通市应用基础研究项目(GY12016056)

摘　　要：采用光学显微镜、扫描电镜、电子背散射衍射技术、X射线衍射和室温力学性能测试、晶间腐蚀试验、剥落腐蚀试验等,研究了固溶前预变形对6013型铝合金晶粒取向和组织性能的影响。结果表明：预变形有利于减弱固溶处理后各晶面晶粒取向,预变形程度越高,晶粒取向减弱程度越大;预变形6013型铝合金固溶后,合金发生了再结晶,随着预变形量的增加,平均晶粒尺寸增加,位错密度降低,但合金的抗拉强度提高;预变形提高了6013型铝合金的腐蚀敏感性,固溶时效处理后发生了不同程度的晶间腐蚀和剥落腐蚀,晶间腐蚀最大深度和剥落腐蚀程度随预变形量的增加而提高。Effect of pre-deformation before solid solution treatment on grain orientation,microstructure and properties of 6013 type aluminum alloy was investigated by optical microscopy（ OM）,scanning electron microscopy（ SEM）,electron backscattered diffraction（ EBSD）,Xray diffraction（ XRD） and tensile testing at room temperature,intergranular corrosion testing,exfoliation corrosion testing. The results indicate that the grain orientation is weakened when the alloy is deformed before solid solution treatment,the weakening of grain orientation is increasing with increasing of pre-deformation; recrystallization occurs after solid solution treatment of pre-deformed 6013 type aluminum alloy,with the increase of pre-deformation,the average grain size increases,the dislocation density decreases,but the tensile strength of the alloy increases; the corrosion sensitivity of 6013 type aluminum alloy increases,the intergranular corrosion and exfoliation corrosion of predeformed 6013 type aluminum alloy occurs after solid solution and aging treatment,the maximum corrosion depth of intergranular corrosion and the degree of exfoliation corrosion increase with the increase of pre-deformation.

关 键 词：预变形 6013型铝合金 晶粒取向 再结晶 织构 

分 类 号：TG142.31[一般工业技术—材料科学与工程]