+Advanced Search
Effects of short-time electromagnetic stirring and grain refiner on microstructure of semisolid slurry of 7A04 alloy
DOI:
Author:
Affiliation:

Southwest Jiaotong University,Southwest Jiaotong University

Clc Number:

TG146.2 1,TG292

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    The effects of short-time electromagnetic stirring(EMS),grain refiner and their combined effects on microstructure and radial homogeneity of large-volume semisolid slurry of 7A04 alloy were investigated.The results indicate that 7A04 alloy semisolid slurry with fine and globular primary α-Al grains could be achieved and the homogeneity of slurry could be improved by either short-time EMS or addition of grain refining element Zr,Sc. Optimum microstructure with average equivalent diameter of 36um,shape factor of 0.68, coefficient of variation Cv of 0.8% at 631℃ could be obtained by the combined action of short-time EMS and grain refiner.As the temperature decreased,microstructure of semisolid slurry of 7A04 alloy coarsened and homogeneity of microstructure of slurry deteriorated,while the shape factor had little change.

    Reference
    Related
    Cited by
Get Citation

[Li Wei, Zhao Junwen. Effects of short-time electromagnetic stirring and grain refiner on microstructure of semisolid slurry of 7A04 alloy[J]. Rare Metal Materials and Engineering,2016,45(10):2664~2670.]
DOI:[doi]

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:July 30,2014
  • Revised:September 01,2014
  • Adopted:September 28,2014
  • Online: November 10,2016
  • Published: