首页|非等温时效对Al-5.87Zn-2.07Mg-2.42Cu合金组织和性能的影响

非等温时效对Al-5.87Zn-2.07Mg-2.42Cu合金组织和性能的影响

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
研究Al-5.87Zn-2.07Mg-2.42Cu合金在非等温时效过程中组织和性能的变化,通过室温拉伸机测试合金的力学性能.结果表明,在非等温时效过程中,当合金冷却到140℃时,合金的抗拉强度达到最大值(582 MPa),此时伸长率为11.9％.此外,通过透射电子显微镜对合金的显微组织进行观察,观察结果表明GP区和η'相是合金的主要强化析出相,当合金冷却到180℃时,GP区发生二次析出.此外,经过非等温时效处理的合金的主要强化相仍为η'相.
Effect of non-isothermal aging on microstructure and properties of Al-5.87Zn-2.07Mg-2.42Cu alloys
The evolution of microstructure and properties of Al-5.87Zn-2.07Mg-2.42Cu alloys during non-isothermal aging was studied. The mechanical properties of the alloy were tested by stretching at room temperature. The results show that in the non-isothermal aging process, when the alloy is cooled to 140 ℃, the ultimate tensile strength of the alloy reaches a maximum value of 582 MPa and the elongation is 11.9％. The microstructure was tested through a transmission electron microscope, and the experimental results show that the GP zones and η' phases are the main strengthening precipitates. At the cooling stage, when the temperature dropped to 180 ℃, the GP zones were precipitated again. Besides, the experimental results show that the main strengthening phase during non-isothermal aging is η' phases.

Al-Zn-Mg-Cu aluminum alloynon-isothermal agingη' phasesmechanical properties

李耀、徐国富、彭小燕、刘时超、邓英、梁霄鹏

展开 >

中南大学材料科学与工程学院,长沙 410083

中南大学有色金属材料科学与工程教育部重点实验室,长沙 410083

Al-Zn-Mg-Cu合金 非等温时效 η'相 力学性能

National Key Research and Development Program of ChinaPostdoctoral Science Foundation of Central South University,ChinaNational Natural Science Foundation of China

2018YFB200180122036351601229

2021

10.1016/S1003-6326(21)65701-1

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCDCSCDSCI
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2021.31(10)
  • 2
  • 1