Enhancement of superelasticity in Cu-Al-Mn-Ni shape-memory alloys by texture control
Enhancement of superelasticity in Cu-Al-Mn-Ni shape-memory alloys by texture control
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DOI：
10.1007/s11661-002-0267-2
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发表时间：
2002-09-01
影响因子：
2.8
通讯作者：
Ishida, K
中科院分区：
文献类型：
--
作者：
Sutou, Y;Omori, T;Ishida, K
显著改善程度的超弹性Cu-Al-Mn韧性多晶合金已经通过添加镍和控制再结晶结构的热机械的加工,其中包含的退火fcc(α)+ bcc(β)两相区域,紧随其后的是大量冷削减超过60 pct。增加倪Cu-Al-Mn合金显示了一个剧烈影响的形成强烈的{112}再结晶结构。在织构的Cu-Al-Mn-Ni合金中实现了7%左右的超弹性应变，是其他cu基形状记忆合金（sma）的3倍。在织构的cu基sma中获得的超弹性应变与ni - ti基合金中获得的超弹性应变相当。
A significant improvement in the degree of superelasticity in Cu-Al-Mn ductile polycrystalline alloys has been achieved through the addition of Ni and control of the recrystallization texture by thermomechanical processing, which contain the annealing in the fcc (alpha) + bcc (beta) two-phase region, followed by heavy cold reductions of over 60 pct. The addition of Ni to the Cu-Al-Mn alloys shows a drastic effect on the formation of the strong {112} recrystallization texture. Superelastic strains on the order of 7 pct, 3 times larger than those in other Cu-based shape-memory alloys (SMAs), have been realized in the textured Cu-Al-Mn-Ni alloys. The superelastic strains obtainable in the textured Cu-based SMAs are on a par with those attainable in Ni-Ti-based alloys.