Influence of Gd on the microstructure, mechanical and shape memory properties of Cu-Al-Be polycrystalline shape memory alloy
Influence of Gd on the microstructure, mechanical and shape memory properties of Cu-Al-Be polycrystalline shape memory alloy
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DOI：
10.1016/j.msea.2018.09.064
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发表时间：
2018-09
期刊：
影响因子：
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通讯作者：
Bala Narasimha Guniputi;S. M. Murigendrappa
中科院分区：
文献类型：
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作者：
Bala Narasimha Guniputi;S. M. Murigendrappa
本文研究了稀土元素Gd对Cu-Al-Be多晶形状记忆合金的影响。Cu_（88.13）Al_（11.42）Be_（0.45）三元合金中添加0.05 ~ 0.15wt%的Gd进行了研究。对该合金的显微组织、形貌、塑性、相组成、晶体结构、相变温度和形状回复率进行了测试。随着钆含量从0增加到0.08wt%，晶粒尺寸细化，晶粒尺寸从463.45 μ m减小到81.80 μm，减小率为82.34%。在0.08wt%钆的情况下，拉伸强度从398.93 MPa增加到581.42 MPa，延展性从10.05%改善到23.72%。相变温度随着钆的增加而增加，形状恢复率从97%降低到65%。
In the present study, the influence of rare earth element gadolinium (Gd) on Cu-Al-Be polycrystalline shape memory alloy has been investigated. Cu88.13Al11.42Be0.45ternary alloy with addition of Gd from 0.05 to 0.15 wt% has been used for investigation. The tests have been carried out for microstructure, morphology, ductility, phases, crystal structure, phase transformation temperatures and shape recovery ratio. Refinement of the grain size resulted as gadolinium increased from 0 to 0.08 wt%, the grain size decreases from 463.45 to 81.80 µm with reduction of 82.34%. The tensile strength has increased from 398.93 to 581.42 MPa with improvement in the ductility from 10.05% to 23.72% at 0.08 wt% gadolinium. The phase transformation temperatures increases as gadolinium increases and reduction in shape recovery ratio from 97% to 65%.