CAJ | 학술논문

采用取向分布函数(ODF)和背散射电子衍射技术(EBSD)研究冷轧和退火对2E12铝合金织构的影响，并采用透射电镜(TEM)分析亚结构在冷轧与退火过程的演变规律。结果表明：2E12合金热轧板在冷变形过程中，随着冷轧变形量从40%增加到80%，黄铜织构(Brass){011}?211?和 S 型织构{123}?634?逐渐增多，立方织构(Cube){001}?100?明显减少。在退火过程中残留的立方取向亚晶通过晶界迁移吞噬周围的S取向亚晶而优先长大。在470℃退火0.5h后，立方织构(Cube){001}?100?成为主要取向，其体积分数为36%。在相同的退火工艺条件下，随着冷变形量的增加，退火后2E12合金的立方织构体积分数增大。
채용취향분포함수(ODF)화배산사전자연사기술(EBSD)연구랭알화퇴화대2E12려합금직구적영향，병채용투사전경(TEM)분석아결구재랭알여퇴화과정적연변규률。결과표명：2E12합금열알판재랭변형과정중，수착랭알변형량종40%증가도80%，황동직구(Brass){011}?211?화 S 형직구{123}?634?축점증다，립방직구(Cube){001}?100?명현감소。재퇴화과정중잔류적립방취향아정통과정계천이탄서주위적S취향아정이우선장대。재470℃퇴화0.5h후，립방직구(Cube){001}?100?성위주요취향，기체적분수위36%。재상동적퇴화공예조건하，수착랭변형량적증가，퇴화후2E12합금적립방직구체적분수증대。
The effects of cold rolling and annealing on textures of 2E12 aluminum alloy were investigated by means of orientation distribution function (ODF) and electron backscattered diffraction (EBSD). In addition, the evolution of substructure during cold rolling and annealing was analyzed by TEM. The results show that, with the increase of the deformation from 40% to 80%, main conclusions are presented as follow: Brass texture{011}?112? and S texture{123}?634?increase during the cold rolling, while cube texture{001}?100?significantly reduces. In the annealing process, the residual cube sub-grains devour surrounding sub-grains of S orientation through the grain boundary migration and preferentially grow up. The cubic texture becomes major orientation and its volume fraction is 36%at 470℃for 0.5 h. Under the same annealing process conditions, the volume fraction of recrystallization texture in the annealing alloy increases with the increase of the deformation.