Paper Title:
Effects of Thermal Exposure on the Mechanical Properties and Microstructure Stability of an Al-Cu-Mg-Ag Alloy
  Abstract

Mechanical properties and microstructural evolution of an Al-Cu-Mg-Ag alloy during thermal exposure at elevated temperature were characterized by means of tensile tests, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observation. The tensile test results suggested that tensile strength (σBbB) and yield strength (σBsB) reduced with both increasing exposure time and temperature. When exposed at 150°C, the Al-Cu-Mg-Ag alloy exhibits good structural stability due to the splendid thermal stability of the Ω phase. SEM results showed that the specimen was fractured in a combined manner of intergranular and transgranular fracture. TEM results suggested the reduction of mechanical properties of samples was attributed to the coarsening of Ω phase and the precipitation of θ phase during thermal exposure.

  Info
Periodical
Advanced Materials Research (Volumes 97-101)
Edited by
Zhengyi Jiang and Chunliang Zhang
Pages
675-678
DOI
10.4028/www.scientific.net/AMR.97-101.675
Citation
A. J. Duan, Z. Y. Liu, L. F. Gao, "Effects of Thermal Exposure on the Mechanical Properties and Microstructure Stability of an Al-Cu-Mg-Ag Alloy ", Advanced Materials Research, Vols. 97-101, pp. 675-678, 2010
Online since
March 2010
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$32.00
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