Mechanism of {111} recrystallization texture evolution in aluminum alloy sheets fabricated by symmetric/asymmetric combined rolling process

对称/非对称联合轧制铝合金板材{111}再结晶织构演化机制

• 批准号: 23360328
• 负责人: INOUE Hirofumi
• 金额: $ 11.15万
• 依托单位: Osaka Prefecture University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23360328/
• 关键词: アルミニウム合金; 冷間圧延; 温間異周速圧延; 溶体化処理; 再結晶集合組織; 微細組織; 転位密度; 微細析出粒子; 集合組織; 回復; 再結晶; Al-Mg-Si合金

In order to improve r-values and acheve good deep drawability in an age-hardenable Al-Mg-Si alloy for automotive body panels, symmetric cold-rolling and asymmetric warm-rolling were conducted under appropreate conditions, and then the mechanism of recrystallization texture evolution was investigated with the purpose of developing the {111} texture favorable for r-value improvement during solution treatment.The {111} recrystallization texture was formed during the solution treatment under high-temperature and short-time of the rolled sheets, which were processed by asymmetric warm-rolling at a low reduction in thickness after cold-rolling. Microstructural observations and orientation analyses suggested that the {111}-oriented subgrains, which had low dislocation density and was hardly subjected to pinning by fine precipitates, became recrystallized nuclei preferentially and encroached on areas with other orientations, resulting in the {111} texture evolution.

为了提高时效硬化型汽车覆盖件用Al-Mg-Si合金的r值，获得良好的深冲性能，在合适的工艺条件下，对该合金进行了对称冷轧和非对称温轧，研究了再结晶织构的演变机制，目的是在固溶处理过程中发展有利于提高r值的{111}织构。冷轧后采用小压下量非对称温轧，在高温短时间固溶处理过程中形成再结晶织构。显微组织观察和取向分析表明，{111}取向的亚晶位错密度低，不易被细小沉淀物钉扎，优先成为再结晶核，并侵占其他取向的区域，导致{111}织构的演化。

项目成果

Evolution of {111}<110> recrystallization texture during solution treatment in age-hardenable Al-Mg-Si alloy processed by cold rolling and subsequent asymmetric warm rolling

冷轧及随后的不对称温轧加工时效硬化Al-Mg-Si合金固溶处理过程中{111}<110>再结晶织构的演变

• 发表时间: 2014
• 作者: H. Inoue;N. Kageyama;Y. Mori
• 通讯作者: Y. Mori

等速・異周速複合圧延した Al-Mg-Si 合金板の再結晶集合組織に及ぼす第 2 相粒子の影響

第二相颗粒对恒速和不同圆周速度轧制Al-Mg-Si合金板材再结晶织构的影响

• 发表时间: 2012
• 作者: 蔭山直佑 ;井上博史 ;森 勇人
• 通讯作者: 森 勇人

Recrystallization Textures of Al-Mg-Si Alloy Sheets Processed by Combination of Symmetric and Asymmetric Rolling

对称与非对称轧制相结合的Al-Mg-Si合金板材的再结晶织构

• 发表时间: 2011
• 作者: Manirakiza;Eric; Seto;Takafumi; Osone;Saho; Fukumori;Kanta; Otani;Yoshio;H. Inoue
• 通讯作者: H. Inoue

{111}<110> Recrystallization Texture Evolution in Al-Mg-Si Alloy Sheets Fabricated by Symmetric/ Asymmetric Combined Rolling Process

{111}<110>对称/非对称联合轧制工艺制造的Al-Mg-Si合金板材的再结晶织构演变

• 发表时间: 2014
• 期刊: Materials Science Forum
• 作者: 江利口浩二;深沢正永;鷹尾祥典;辰巳哲也;斧高一;H. Inoue
• 通讯作者: H. Inoue

等速・異周速複合圧延した Al-Mg-Si 合金板における {111} 再結晶粒の形成過程

Al-Mg-Si合金板材恒速和不同圆周速度轧制{111}再结晶晶粒的形成过程

• 发表时间: 2013
• 作者: 蔭山直佑 ;井上博史
• 通讯作者: 井上博史