All Title Author
Keywords Abstract

Publish in OALib Journal
ISSN: 2333-9721
APC: Only $99

ViewsDownloads

Relative Articles

More...
China Foundry  2012 

Research on lamellar structure and micro-hardness of directionally solidified Sn-58Bi eutectic alloy

Keywords: directional solidification , eutectic alloy , microstructure , micro-hardness

Full-Text   Cite this paper   Add to My Lib

Abstract:

In this work, the Sn-58Bi (weight percent) eutectic alloy was directionally solidified at a constant temperature gradient (G = 12 K·mm-1) with different growth rates using a Bridgman type directional solidification furnace. A lamellar microstructure was observed in the Sn-58Bi samples. The lamellar spacing and micro-hardness of longitudinal and transversal sections were measured. The values of lamellar spacing of both longitudinal and transversal sections decrease with an increase in growth rate. The microhardness increases with an increase in the growth rate and decreases with an increase in the lamellar spacing. The dependence of lamellar spacing on growth rate, and micro-hardness on both growth rate and lamellar spacing were obtained by linear regression analysis. The relationships between the lamellar spacing and growth rate, microhardness and growth rate, and micro-hardness and lamellar spacing for transversal and longitudinal sections of Sn-58Bi eutectic alloy were given. The fitted exponent values obtained in this work were compared with the previous similar experimental results and a good agreement was obtained.

Full-Text

comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133

WeChat 1538708413