Paper Title:

Effect of Final Annealing Temperature on Antibacterial Precipitate of Copper-Bearing Ferritic Stainless Steel

Periodical Materials Science Forum (Volumes 620 - 622)
Main Theme Eco-Materials Processing and Design X
Edited by Hyungsun Kim, JienFeng Yang, Tohru Sekino and Soo Wohn Lee
Pages 213-216
DOI 10.4028/www.scientific.net/MSF.620-622.213
Citation De Ning Zou et al., 2009, Materials Science Forum, 620-622, 213
Online since April, 2009
Authors De Ning Zou, Yan Zhang, Ying Han, Wei Zhang
Keywords Antibacterial Precipitate Phase, Ferritic Stainless Steel (FSS), Final Annealing Temperature
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Abstract

In order to keep the steel with outstanding antibacterial characteristics, the relationship between the anneal temperatures and the amounts of the precipitated Cu-rich phase was investigated in this work. The SEM analysis of annealing specimens indicated that the microstructure changed with the increase of annealing temperature. At 900C, the martensite phase appeared along the crystal boundary, but the amount of Cu-rich phase was almost no change. At 920C, the sizes of the Cu-rich precipitates minished and the amounts of the precipitates reduced gradually. At 940C, there was only martensite phase existing in the ferrite matrix. Therefore, the optimal final annealing temperature range was chosen from 880C to 900C to ensure attaining excellent antibacterial properties and favorable mechanical characteristic of copper-bearing stainless steel.