Study on linear segregation of zl205a alloy

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Linear segregation of high strength aluminum alloy ZL205A castings were studied by X-ray Nondestructive testing, scanning electron microscope and energy dispersive spectrometer. It is found that the linear segregation occurs at the large wall thickness of the casting and/or at the place where the wall thickness is in transition. Segregation element is mainly Cu, which exists as compound θ(Al2Cu) phase. The formation of linear segregation is related to the flow of Cu-rich melt in the late solidification period, while the occurrence of thermal cracks promotes the formation of linear segregation. The formation of linear segregation of the casting can be effectively prevented by eliminating hot spots of the casting, refining crystal grains and increasing solidification speed of the casting.

Original languageEnglish
Title of host publicationStructural and Smart Materials IV - Selected peer-reviewed full text papers from the 6th International Conference on Mechanical Structures and Smart Materials, ICMSSM 2020
EditorsKheng Lim Goh
PublisherTrans Tech Publications Ltd
Pages8-12
Number of pages5
ISBN (Print)9783035736861
DOIs
StatePublished - 2021
Event6th International Conference on Mechanical Structures and Smart Materials, ICMSSM 2020 - Ho Chi Minh City, Viet Nam
Duration: 25 Jul 202026 Jul 2020

Publication series

NameMaterials Science Forum
Volume1020 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference6th International Conference on Mechanical Structures and Smart Materials, ICMSSM 2020
Country/TerritoryViet Nam
CityHo Chi Minh City
Period25/07/2026/07/20

Keywords

  • Casting
  • Linear segregation
  • ZL205A alloy

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