2.Directional rapidly solidified Ni-base superalloy Rene95 with ultra-fine columnar grain structure was produced by the laser melting deposition (LMD) manufacturing process.采用激光熔化沉积定向快速凝固工艺,制备出了具有快速定向生长微细柱晶组织的Rene95高温合金板状试样,其一次枝晶间距约为7μm、枝晶间完...