STRESS-INDUCED MARTENSITIC-TRANSFORMATION CYCLING AND 2-WAY SHAPE MEMORY TRAINING IN CU-ZN-AL ALLOYS
STRESS-INDUCED MARTENSITIC-TRANSFORMATION CYCLING AND 2-WAY SHAPE MEMORY TRAINING IN CU-ZN-AL ALLOYS
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DOI：
10.1007/bf02645117
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发表时间：
1984-01-01
期刊：
影响因子：
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通讯作者：
SPONHOLZ, RO
中科院分区：
文献类型：
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作者：
PERKINS, J;SPONHOLZ, RO
通过严格控制的热机械循环和对特定“训练”程序的渐进效应的仔细测量，以及对亚显微组织随训练进行的演变的初步研究，研究了Cu-Zn-Al合金的双向形状记忆特性和机理。结果建立了循环训练程序和样品表现出双向形状记忆的能力之间的定量关系。众多的训练参数与循环的变化和解释。显微镜研究表明，作为双向形状记忆训练的进行，特定的物理功能开发的母相亚显微结构，特别是位错缠结和“残留”马氏体标记，这些有助于在冷却过程中的一个优选的马氏体板的排列的成核和生长。
The character and mechanism of two-way shape memory in Cu-Zn-Al alloys is investigated by means of closely controlled thermomechanical cycling and careful measurement of the progressive effect of the particular “training” routine, as well as by correlary studies of submicrostructural evolution as training proceeds. The results establish the quantitative relationship between the cyclic training routine and the ability of the sample to exhibit two-way shape memory. The variation of numerous training parameters with cycling is presented and interpreted. Microscopic studies indicate that as two-way shape memory training proceeds, specific physical features develop in the parent phase submicrostructure, particularly dislocation tangles and “vestigial” martensite markings; these assist in the nucleation and growth of a preferred martensite plate arrangement during cooling.