热处理温度和应变速率对Ni-22 at%Al-1.0 at%Zr合金拉伸性能的影响

JOURNAL OF IRON AND STEEL RESEARCH(2003)

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Abstract
热处理温度通过影响冷轧多晶Ni-22at%Al-1.0at%Zr合金的再结晶体积分数和晶粒尺寸而影响其力学性能.该合金的室温拉伸屈服强度随热处理温度升高而降低;抗拉强度和伸长率先增加后降低,在900℃达到最大值.应变速率并不影响900℃热处理合金的屈服强度,但显著影响抗拉强度和伸长率,这表明该合金仍存在环境脆性.
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