Hot forging of cast magnesium alloy TX31 using semi-closed die and its finite element simulation

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

Authors

  • K. P. Rao
  • K. Suresh
  • Y. V.R.K. Prasad
  • N. Hort
  • K. U. Kainer

Magnesium alloys based on Mg-Sn-Ca system have shown improved corrosion and creep properties. In this type of alloys,Sn forms a solid solution with Mg that improves the corrosion resistance while Ca forms thermally stable intermetallic phases in the matrix enhancing the creep resistance. The Sn to Ca ratio is an important variable in deciding the type of intermetallic phases that form in the microstructure.In Mg-3Sn-1Ca alloy (TX31), a single intermetallic phase CaMgSnforms, which is responsible for its improved creep strength.With a view to evaluate its forgeability,isothermal forging experiments of TX31 were conducted on a hydraulic press in the temperature range of 350°C to 500°C and at speeds of 0.01 mm s-1to 10 mm s-1 using a semiclosed die. Finite-element (FE) simulation of the forging process was also conducted using the software DEFORM 2D to obtain the local variations of strain and strain rate. The effectivestrain values are below2.4 in the forged components and the forging loads predicted using FE simulation correlated well with the experimental data for all the forging conditions. The microstructures of the forgings show that CaMgSn phase is well distributed in the matrix which exhibited dynamically recrystallized microstructure as predicted by the processing map.

Original languageEnglish
Title of host publicationTHERMEC 2013
EditorsB. Mishra, Mihail. Ionescu, T. Chandra
Number of pages6
PublisherTrans Tech Publications Ltd
Publication date05.2014
Pages449-454
ISBN (print)9783038350736
DOIs
Publication statusPublished - 05.2014
Externally publishedYes
Event8th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC 2013 - Las Vegas, NV, United States
Duration: 02.12.201306.12.2013
Conference number: 8

    Research areas

  • FE simulation, Forging, Magnesium alloy, Microstructure, Plastic behavior
  • Engineering

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