Properties of shape memory Fe-based alloys after hydroextrusion treatment

被引：0
|
作者：
Chernenko, VA [1 ]
Shklyarenko, VP [1 ]
Vitenko, IN [1 ]
机构：
[1] NATL ACAD SCI UKRAINE,INST MET PHYS,KIEV 252680,UKRAINE
来源：
METALLOFIZIKA I NOVEISHIE TEKHNOLOGII | 1995年 / 17卷 / 11期
关键词：
shape memory steel; hydroextrusion; martensitic transformation;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hydroextrusion treatment at room temperature (''cold'' hydroextrusion) and hydroextrusion at heating (''hot'' hydroextrusion) were used to produce samples of Fe-Ni-Co-Ti shape memory alloys (SMA). The hot hydroextrusion (hydrostatic pressure value, temperature and compression degree are equal to 0.9 GPa, 1073 K and 78%, respectively) of the preliminary hot rolled and subsequently quenched alloy was shown to induce about twice larger level of reversible strain due to the gamma reversible arrow alpha transformation as compared with the initial state. Cold hydroextrusion treatment applied to as-cast quenched Fe-Ni-Co-Ti alloy caused significant deepening of minimum at the M(s) vs aging time dependence. It was experimentally confirmed that homogenization degree in Fe-Ni-Co-Ti alloys is enhanced after the hydroextrusion treatment.
引用
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页码：36 / 40
页数：5
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