Experimental Study on the Reheating Process for A356 Alloy in Thixoforming

被引：0
|
作者：
Tang, Pei [1 ]
Mei, Deqing [1 ]
Zhou, Honghua [1 ]
Sun, Zhuoxiong [1 ]
机构：
[1] Zhejiang Univ, Dept Mech Engn, Hangzhou 310027, Zhejiang, Peoples R China
来源：
MATERIALS PROCESSING TECHNOLOGIES, PTS 1 AND 2 | 2011年 / 154-155卷
关键词：
Induction heating; High frequency; Thixoforming; Microstructure; ALUMINUM-ALLOYS;
D O I：
10.4028/www.scientific.net/AMR.154-155.1324
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The induction heating of the billets is a critical step in the thixoforming process. To improve the quality of thixoforming, the induction heating strategy should be investigated. In this study, by using an induction heating system of 50 kHz, multi-step reheating schemes were adopted to reheat the nondendritic A356 alloy to the temperature between the solidus and liquidus line. To obtain uniform temperature distribution and fine globular microstructure, the effects of the reheating parameters, such as reheating time, reheating temperature, holding time and holding temperature, were investigated. Then the analysis of the final temperature difference and the optical microstructure of the reheated billets were conducted, the results showed that two-step reheating process is suitable for A356 alloy with the size of phi 45 mm x 25 mm, and the suitable time for the final holding process is 2 min.
引用
收藏
页码：1324 / 1329
页数：6
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