Fabrication of nanostructured medical-grade stainless steel by mechanical alloying and subsequent liquid-phase sintering
Hadianfard, M. J.
Mashhadi, S. B.
Okyay, A. K.
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
2994 - 2998
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Please cite this item using this persistent URLhttp://hdl.handle.net/11693/28176
This article focuses on the microstructure of medical-grade P558 (ASTM F2581) stainless steel produced by mechanical alloying and liquid-phase sintering. Rietveld X-ray diffraction and transmission electron microscopy reflect that the mechanically alloyed stainless steel powder is a nanocrystal dispersed amorphous matrix composite.Mn-11.5 wt pct Si eutectic alloy as additive improves densification of the synthesized P558 alloy via liquid-phase sintering mechanism. X-ray mapping shows that after sintering at 1323 K (105°C) for 1 hour, a uniform distribution of dissolved Mn and Si is achieved. Moreover, the development of a nanostructured, fully austenitic stainless steel after sintering at the same temperature is realized by X-ray diffraction and transmission electron microscopy.
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