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13 天
激光增材制造新突破:精细调控NiTi合金弹热效应,实现制冷定制
增加扫描速度能够降低相变温度(即适用温度)。然而,在制冷温降上,采用更高激光功率制备的样品表现更优,尽管其相变温度可以调至相近。主要源于Ni损失提高了相变焓差,而较大晶粒尺寸则使材料能承受更高相变应变。在超弹性方面,较低能量输入与较高扫描速度更有利于 ...
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