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    PROCEEDINGS

    Multi-Scale Microstructure Manipulation of an Additively Manufactured CoCrNi Medium Entropy Alloy for Superior Mechanical Properties and Tunable Mechanical Anisotropy

    Chenze Li1, Manish Jain1,2, Qian Liu1, Zhuohan Cao1, Michael Ferry3, Jamie J. Kruzic1, Bernd Gludovatz1, Xiaopeng Li1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.31, No.4, pp. 1-2, 2024, DOI:10.32604/icces.2024.011290

    Abstract Laser powder bed fusion (LPBF) additive manufacturing (AM) technology has become a versatile tool for producing new microstructures in metal components, offering novel mechanical properties for different applications. In this work, enhanced ductility (~55% elongation) and tunable mechanical anisotropy (ratio of ductility along vertical to horizontal orientation from ~0.2 to ~1) were achieved for a CoCrNi medium entropy alloy (MEA) by multi-scale synergistic microstructure manipulation (i.e., melt pool boundary, grain morphology and crystallographic texture) through adjusting key LPBF processing parameters (e.g., laser power and scan speed). By increasing the volumetric energy density (VED) from 68.3… More >

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