Evaluation of Long-term Viscoelastic Properties of Gasket Material at Elevated Temperature by Indentation Technique

2017 ◽  
Vol 2017 (0) ◽  
pp. PS04
Author(s):  
Yuki SEMA ◽  
Kouhei YAMASHITA ◽  
Hirokazu TSUJI
2012 ◽  
Vol 2012 (0) ◽  
pp. _OS1416-1_-_OS1416-3_
Author(s):  
Naoki ISHII ◽  
Yuya MIYAZAWA ◽  
Masahiro HAGIHARA ◽  
Atsushi YAMAGUCHI ◽  
Hirokazu TSUJI

Author(s):  
R. E. Franck ◽  
J. A. Hawk ◽  
G. J. Shiflet

Rapid solidification processing (RSP) is one method of producing high strength aluminum alloys for elevated temperature applications. Allied-Signal, Inc. has produced an Al-12.4 Fe-1.2 V-2.3 Si (composition in wt pct) alloy which possesses good microstructural stability up to 425°C. This alloy contains a high volume fraction (37 v/o) of fine nearly spherical, α-Al12(Fe, V)3Si dispersoids. The improved elevated temperature strength and stability of this alloy is due to the slower dispersoid coarsening rate of the silicide particles. Additionally, the high v/o of second phase particles should inhibit recrystallization and grain growth, and thus reduce any loss in strength due to long term, high temperature annealing.The focus of this research is to investigate microstructural changes induced by long term, high temperature static annealing heat-treatments. Annealing treatments for up to 1000 hours were carried out on this alloy at 500°C, 550°C and 600°C. Particle coarsening and/or recrystallization and grain growth would be accelerated in these temperature regimes.


Sign in / Sign up

Export Citation Format

Share Document