Salahinejad, E.Hadianfard, M. J.Ghaffari, M.Mashhadi, S. B.Okyay, Ali Kemal2016-02-082016-02-082012-02-020167-577Xhttp://hdl.handle.net/11693/21493One of the effective approaches to reduce residual pores in powder metallurgy parts is activated liquid-phase sintering process using proper additives. In this work, for the first time, a new biocompatible additive (Mn-11.5 wt.% Si, a eutectic alloy) is experimented for liquid-phase sintering of nanocrystalline/amorphous P558 stainless steel powders. It is realized that by increasing the sintering aid content and temperature, the density is effectively increased: a sharp densification progress when the sintering temperature increases from 1000 °C to 1050 °C and a slower densification rate when it exceeds 1050 °C. This preliminary study opens up the development of high-density medical-grade stainless steels produced by powder metallurgy, where suitable additives can lower sintering temperature and time, which is promising for retarding grain growth and commercial applications.EnglishMicrostructureNanocrystalline materialsSinteringCommercial applicationsDensification rateEutectic alloysHigh-densityLower sintering temperaturesNanocrystallinesPowder metallurgy partsSintering AidSintering temperaturesStainless steel powdersAdditivesGrain growthLiquidsManganeseMicrostructurePowder metallurgyStainless steelSinteringArticle10.1016/j.matlet.2012.01.118