一种锌基合金热变形行为的试验模拟
Thermo-compression Behavior of a Zinc Based Alloy
摘 要
采用热模拟试验机对一种自行研制的高强度易切削锌基合金进行了等温热压缩试验.结果表明:该锌合金热压缩变形流变应力随变形温度升高而减小,随应变速率增大而增大,变形材料内部的温升随应变速率的增大而加剧;可用包含变形温度、应变速率和变形程度的Zener-hollomon模型来真实描述该锌合金高温变形的流变行为.
流变应力
热变形行为
等温热压缩试验
zinc based alloy
flow stress
hot deformation behavior
isothermal compression
Abstract
The hot deformation behaviors of a self-developed zinc based alloy which could replace HPb59-1 brass used as structural pieces were investigated by means of the isothermal compression test.The flow stress of the zinc based alloy during isothermal compression decreases with temperature,and increase with the strain rate.Temperature is enhanced obviously with increasing the strain rate.The flow stress of the zinc alloy during isothermal compression can be described by Zener-Hollomon parameter model.
中图分类号 TG146.1
所属栏目
基金项目
收稿日期 2006/10/17
修改稿日期 2007/2/1
网络出版日期
作者单位点击查看
备注林高用(1966-),男,湖南洞口人,副教授,博士.
引用该论文: LIN Gao-yong,ZHENG Xiao-yan,ZHOU Jia,ZHANG Zhen-feng,XIAO Xian. Thermo-compression Behavior of a Zinc Based Alloy[J]. Materials for mechancial engineering, 2007, 31(7): 60～62
林高用,郑小燕,周佳,张振峰,肖弦. 一种锌基合金热变形行为的试验模拟[J]. 机械工程材料, 2007, 31(7): 60～62
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参考文献
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【4】刘政,朱应禄.稀土锌合金凝固组织与力学性能的研究[J].南方冶金学院学报,2002(1):38-42.
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【6】牛济泰.材料和热加工领域的物理模拟技术[M].北京:国防工业出版社,1998.
【7】Mcqueen H J,Jonas J J.Recovery and recrystallization in the hot-working of aluminum alloys[C]//Arsenault R J.Treatise Deformation of Materials.New York:Academic Press,1975:393-493.
【8】Wang W A,Jonas J J.Flow of plastic and visco-plastic solids in hot forming process[J].Trans Metall Soc AIME,1968,242:2271-2279.
【9】Sah J P,Richardson G J,Sellar C M.Plane strain compression testing at elevated temperature[J].J Aust Inst Met,1969,14:292-301.
【10】Castro-Fernandez F R,Sellars C M,Whiteman J A.Changes of flow stress and micro-structure during hot deformation of Al-1Mg-1Mn[J].Mater Sci Technol,1990,6:453-468.
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