High transition-temperature shape memory alloy (SMA) is widely used in aviation, aerospace and weapon fields. Using commercially available Cu, Al and Fe powders, Cu–13Al–5Fe alloy with high austenite transition temperature of 356–419 °C has been fabricated by laser powder bed fusion (LPBF) and a criterion for formulating the process parameters of LPBF based on the mixture of metal powders has been established. It is found that the LPBF can refine the structure, enhance the mechanical property and shape memory effect (SME). The structure of LPBF formed Cu–13Al–5Fe alloy under the quenched state is composed of tiny β′ martensite distributing in the matrix while the shape memory recovery rate can reach to 100% at the bending sample with 100°, and the shape memory recovery strain can reach to 1.08% under the 5% pre-strain by compressive test. Besides, the compressive stress and strain are 1240 MPa and 15.65% at room temperature. Compared with the arc-melted Cu–13Al–5Fe alloy under the quenched state, its shape memory recovery strain and recovery ratio are increased by 54.2% and 65%, respectively; and its compressive stress and strain are increased by 37.32% and 70.11%, respectively. Considering that, the work provides a criterion and a method for forming the component of Cu–Al–Fe alloy by LPBF based on the mixture of metal powders.

高转变温度形状记忆合金（SMA）广泛应用于航空、航天和兵器领域。使用市售的 Cu、Al 和 Fe 粉末，通过激光粉末床熔合 (LPBF) 制造了具有 356-419 °C 高奥氏体转变温度的 Cu-13Al-5Fe 合金，并制定了 LPBF 工艺参数的标准基于金属粉末的混合物已经建立。发现LPBF可以细化结构，增强机械性能和形状记忆效应（SME）。LPBF形成的Cu-13Al-5Fe合金在淬火状态下的组织由分布在基体中的微小β'马氏体组成，形状记忆恢复率在100°弯曲样品处可达100%，形状记忆恢复通过压缩试验，在5%预应变下应变可达1.08%。除了，室温下的压应力和应变分别为1240 MPa和15.65%。与淬火状态下电弧熔炼Cu-13Al-5Fe合金相比，其形状记忆恢复应变和恢复率分别提高了54.2%和65%；其压应力和应变分别增加了37.32%和70.11%。考虑到这一点，该工作提供了基于金属粉末混合物的 LPBF 形成 Cu-Al-Fe 合金成分的标准和方法。