【摘要】 采用取向分布函数（ＯＤＦ）研究了纯铝板材单轴拉伸过程中的织构演变规律。结果表明，单轴拉伸过程中存在着明显的织构变化。相对于拉伸坐标系而言，稳定性较好的织构组分主要有｛１１０｝〈１１１〉，｛１１２｝〈１１１〉和｛１００｝〈００１〉，稳定性较差的织构组分主要有｛１１０｝〈１１０〉和｛１１２｝〈１１０〉。拉伸过程中晶粒的〈１１１〉和〈００１〉方向分别为稳定和较稳定的拉伸方向，〈１１０〉方向为不稳定的拉伸方向。更多还原

【Abstract】 Texture changes of aluminum sheet after different uniaxial tensile deformations were investigated with the aid of the experimentally determined orientation distribution functions. The results demonstrate that there are obvious texture changes during uniaxial tensile testing. Referring to the tensile coordinate system, texture components {110}〈111〉, {112}〈111〉 and {100}〈001〉 are stable, {110}〈001〉 is metastable and {110}〈110〉 and {112}〈110〉 are unstable. From the viewpoint of stability relative to the tensile direction, 〈111〉 and 〈001〉 directions of crystals are stable and metastable respectively, while 〈110〉 direction is unstable during uniaxial tension.更多还原