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在激光近净成形制备多孔材料过程中,可以通过改变多孔零件的孔隙率来获得理想的弹性模量。通过实验研究了在激光功率、扫描速度、送粉速率及搭接率确定情况下,不同偏移距对Ni60粉末多孔材料孔隙率和通孔率的影响;在参数优化的基础上制备了多孔金属镍材料并进行了压缩性能实验,建立了多孔镍合金材料孔隙率与压缩强度及压缩弹性模量的对应关系。
In the process of laser near net forming to prepare porous materials, the desired elastic modulus can be obtained by changing the porosity of porous parts. The influence of different offset on the porosity and the via rate of Ni60 powder porous materials was experimentally studied under the conditions of laser power, scanning speed, powder feeding rate and overlap rate. On the basis of the parameter optimization, porous metal Nickel material and the compression performance experiments were conducted to establish the corresponding relationship between porosity and compressive strength and compressive elastic modulus of porous nickel alloy.