Fabrication of nanostructured medical-grade stainless steel by mechanical alloying and subsequent liquid-phase sintering

Date
2012-05-10
Advisor
Instructor
Source Title
Metallurgical and Materials Transactions A
Print ISSN
1073-5623
Electronic ISSN
Publisher
Springer
Volume
43
Issue
8
Pages
2994 - 2998
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

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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Book Title
Keywords
Amorphous matrices, Eutectic alloys, Mechanically alloyed, Nano-structured, Rietveld, Stainless steel powders, Uniform distribution, X-ray mapping, Amorphous silicon, Austenitic stainless steel, Liquids, Manganese, Mechanical alloying, Nanocrystalline alloys, Silicon, Transmission electron microscopy, X ray diffraction, Sintering
Citation
Published Version (Please cite this version)