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Paper Information

Journal:   JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)   May 2002 , Volume 36 , Number 1 (75); Page(s) 97 To 105.
 
Paper: 

T.E.M INVESTIGATION OF THE PRECIPITATION HARDENING IN AL-30% ZN ALLOY

 
 
Author(s):  SHAHMIRI M.*
 
* Dept of Metallurgy and Materials Engineering, Science & Industry University of Technology
 
Abstract: 

Zinc based alloys of the Binary system of Zn-Al have wide industrial applications, such as Bearing and Bushing. Various physical metallurgical principles of Zinc-rich alloys have been fully investigated especially, their phase transformations near the room temperature. Less attention has been paid to the Al-rich alloy (with more than 20 wt% of Zn) of the same Binary system, especially quench - ageing processes, near the room temperature. In the present article, the phase transformations of the Al based alloy (with 30 Wt% of Zn) after the quench- ageing processes, natural and artificially aged at 100°C have been investigated, by mans of Electron Microscopy (T.E.M, S.T.E.M), Techniques. It has been shown that the high temperature supersaturated α' phase is transferred to the stable η- phase by the formation of G.P Zones and two transitional phases called α'm and α"m both with the F.C.C structures.

 
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