摘要
采用累积叠轧焊(ARB)工艺加工1050铝合金带材,分别在室温(冷ARB)和200℃(热ARB)两种条件下进行。拉伸测试和显微硬度测试结果表明,与冷ARB工艺相比,由于热ARB工艺中的中间热处理和高温轧制过程的作用,热ARB工艺加工的合金具有较低的抗拉强度和显微硬度,显微硬度分布更均匀,且具有较高的伸长率,特别是更优异的拉伸性能平面各向同性。此外,随着两种加工过程循环次数的增加,合金的平面各向同性逐渐减小。
The accumulative roll-bonding(ARB)process was applied on the strips of aluminum alloy 1050 in two processing conditions:cold ARB and warm ARB.The results of tensile tests and microhardness measurement show that the warm ARB process exhibits the lower tensile strength and microhardness,more homogeneous distribution of the microhardness,higher elongation,and especially superior planar isotropy of the tensile properties in comparison to the cold ARB,because of the intermediate heat treatment as well as the elevated temperature rolling in the warm ARB process.Furthermore,with increasing the cycles of both processes,the planar isotropy decreases progressively.
关键词
铝
累积叠轧焊(ARB)
中间热处理
力学性能
平面各向同性
硬度分布
aluminum
accumulative roll-bonding(ARB)
intermediate heat treatment
mechanical properties
planar isotropy
hardness distribution
