摘要
采用Gleeble-1500热模拟机,研究了基于半固态等温热处理技术制备的Y112铝合金,在不同变形温度和变形速率下的半固态压缩变形力学行为。结果表明,当压缩应变低于0.8时,随着压缩应变的增加,合金的半固态压缩应力首先快速增加,然后快速减小,最后逐渐保持不变;同时,在不同变形温度和变形条件下,合金在压缩应变近似为0.07时均可获得最大的半固态压缩应力;此外,随着变形温度降低或变形速率升高,合金的半固态压缩变形应力增加。
The compression deformation behavior of semi-solid Y112 aluminum alloy manufactured by semi-solid isothermal treatment has been examined by means of Gleeble-1500 thermal-mechanical simulator in the conditions of different deformation temperatures and different deformation rates. It is found that when the compression strain is less than 0.8, compression stress of semi-solid aluminum alloy is firstly rapidly increased then rapidly decreased with the increase of compression strain. The maximum compression stress of semi-solid aluminum alloy can be observed with the compression strain approximately 0.07 at both different deformation temperaturse and different deformation stresses. In addition, the compression stress can be increased with decreasing in deformation temperature or increasing in deformation rate.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2007年第2期111-112,共2页
Special Casting & Nonferrous Alloys
基金
重庆市自然科学基金资助项目(8659)
重庆市教委应用基础研究项目(KJ050603)
关键词
半固态等温热处理
Y112铝合金
压缩变形
力学行为
Semi-solid Isothermal Treatment, Y112 Aluminum Alloy, Compression Deformation, Mechanical Properties
