欢迎登录材料期刊网

材料期刊网

高级检索

  • 论文(2)
  • 图书()
  • 专利()
  • 新闻()

MICROSTRUCTURE AND TENSILE PROPERTIES OF RAPIDLY SOLIDIFIED Al-3.8Li-0.8Mg-0.4Cu-0.13Zr ALLOY PREPARED BY SPRAY DEPOSITION

CUI Chengsong , FAN Hongbo , SHEN Jun , JIANG Zuling , LI Qingchun(Department of Metallic Materials and Technology , Harbin Institute of Technology , Harbin 150001 , China) Manuscript received 26 May 1995

金属学报(英文版)

Al-3.8Li-0.8Mg-0.4Cu-0.13Zr alloy was prepared by a novel spray deposition technique,and its microstructure and tensile properties after various aging treatments have been investigated. The experimental results show that the alloy,under study has very fine equiaxed grains about 5-20μm in diameter and a relative density of(94±3)% on average.Grains in the as-extruded alloy are"brick-like"in morphology,and few oxide particles have been found al the grain boundaries.δ' particles with irregular shape and"δ'-β'"coprecipitates appear in the aged alloy.The coarsening of δ'particles is fast,and the distance between the particles does not widen so obviously as that of IM(ingot-casting method) alloys with increasing aging time.The spray deposited Al-Li alloy.reaches the peak-aged condition in a short time(10 h al 190℃) when the best properties(σb=534 MPa, σ0.2=480 MPa.δ=10%) are obtained.Compared with RSPM(rapid solidification processing method)Al-Li alloy,the ductility of the tested alloy has been obviously.enhanced while a comparable tensile strength is maintained.

关键词: :spray deposition , null , null , null , null

出版年份

刊物分类

相关作者

相关热词