• microstructure and mechanical properties of open-cellular biomaterials prototypes for total knee replacement implants fabricated by electron beam melting

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1394/01/01
    • تاریخ انتشار در تی پی بین: 1394/01/01
    • تعداد بازدید: 781
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    • شماره تماس دبیرخانه رویداد: -
      total knee replacement implants consisting of a co–29cr–6mo alloy femoral component and a ti–6al–4v tibial component are the basis for the additive manufacturing of novel solid, mesh, and foam monoliths using electron beam melting (ebm). ti–6al–4v solid prototype microstructures were primarily α-phase acicular platelets while the mesh and foam structures were characterized by α′-martensite with some residual α. the co–29cr–6mo containing 0.22% c formed columnar (directional) cr23c6 carbides spaced ∼2 μm in the build direction, while hip-annealed co–cr alloy exhibited an intrinsic stacking fault microstructure. a log–log plot of relative stiffness versus relative density for ti–6al–4v and co–29cr–6mo open-cellular mesh and foams resulted in a fitted line with a nearly ideal slope, n=2.1. a stress shielding design graph constructed

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