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3 低功率和低扫描速率条件下能量密度与NiTi SMAs的成形性关系图[9]；高功率和高扫描速率条件下得到的NiTi SMAs[26]；Eagar-Tsai模型预测的工艺参数与对应的成形质量图[19]

Fig.3 Variation of formability in SLM NiTi SMAs with different energy densities (low power and low scanning speed) (a)[9], SLM NiTi SMAs with different energy densities (high power and high scanning speed) (b)[26], diagrams between the process parameters of SLM Ni50.8Ti49.2 (c)[19] and Ni50.1Ti49.9 (d)[19] SMAs and formability predicted by Eagle-Tsai model (Pentagram shape in orange is SLM NiTi SMAs fabricated with low power and low scanning speed, pentagram shape in red is SLM NiTi SMAs fabricated with high power and high scanning speed)