Mechanical Property Comparison of Ni–Cr–Mo Alloys Fabricated via One Conventional and Two New Digital Manufacturing Techniques

This study compared the microstructures and mechanical properties of nickel–chromium–molybdenum (Ni–Cr–Mo) alloys prepared from a single alloy with an identical composition using two new digital processes (selective laser melting (SLM) soft metal milling (SMM)) conventional lost-wax casting (LWC). Disc specimens were used to via various analytical methods, while dumbbell-shaped subjected tension determine (n = 6). The SLM SMM showed higher number large small pores, respectively, than LWC alloy. A face-centered cubic (γ)-phased matrix was indexed for all three resultant alloys. also more homogeneously distributed elements finer grains (in particular, ultrafine in alloy) when Meanwhile, statistically yield strength other (p < 0.001). Notwithstanding, Ni–Cr–Mo satisfied ISO 22674 standard criteria type 5 materials (yield strength: >500 MPa; percentage elongation: >2%; elastic modulus: >150 GPa).