Abstract

Effect of nano-CeO₂ doping was studied on self-accommodating Cu–12Al–4Ni based shape memory alloys. Cu–Al–Ni based alloys are known for their high thermal stability and good shape memory properties but mechanical processing of these alloys is very difficult due to their high brittle nature and susceptibility to inter-granular failure. The present work deals with the enhancement of mechanical as well as shape recovery characteristics of these alloys with the addition of nano-CeO₂. Significant improvements in ductility (1.8 times), strength and shape recovery were observed with the addition of nano-CeO₂ with respect to the base alloy.

Graphic Abstract

中文翻译：

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Nano-CeO2 掺杂的 Cu-Al-Ni SMA 具有增强的机械特性和形状恢复特性

摘要

研究了纳米CeO ₂掺杂对自调节Cu-12Al-4Ni 基形状记忆合金的影响。Cu-Al-Ni 基合金以其高热稳定性和良好的形状记忆性能而著称，但由于它们的高脆性和对晶间破坏的敏感性，这些合金的机械加工非常困难。目前的工作涉及通过添加纳米 CeO _{2 来}增强这些合金的机械特性和形状恢复特性。相对于基体合金添加纳米CeO _{2 后}，观察到延展性（1.8 倍）、强度和形状恢复的显着改善。

图形摘要