选区激光熔化NiTi形状记忆合金研究进展

杨超, 卢海洲, 马宏伟, 蔡潍锶

Research and Development in NiTi Shape Memory Alloys Fabricated by Selective Laser Melting

YANG Chao, LU Haizhou, MA Hongwei, CAI Weisi

图11 SLM NiTi SMAs的单向拉伸力学性能和拉伸超弹性[15,19,43,47,80]

Fig.11 Uniaxial tensile mechanical properties and tensile superelasticity of SLM NiTi SMAs (a) uniaxial tensile mechanical properties of SLM Ni50.6Ti49.4 (at austenite state) at different laser powers[15] (b) uniaxial tensile mechanical properties of SLM Ni50.4Ti49.6 at martensite state[43] (c, d) tensile driving behaviors at different laser scanning hatches[80] (εact—actuation strain, εirr—irrecoverable strain) (e, f) cyclic tensile superelasticities of SLM Ni50.8Ti49.2 with and without heat treatment[19] (T—temperature) (g, h) cyclic tensile superelasticities of SLM Ni50.4Ti49.6 with different heat treatments[47]