Yield strength prediction for rapid age-hardening heat treatment of aluminum alloys

Hebi Yin, Adrian S. Sabau, Gerard M. Ludtka, Timothy W. Skszek, Xiaoping Niu

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

Abstract

A constitutive model has been developed to predict the yield strength aging curves for aluminum casting alloys during non-isothermal age-hardening processes. The model provides the specific relationship between the process variables and yield strength. Several aging heat treatment scenarios have been investigated using the proposed model, including two-step aging recipes. Two-step aging heat treatments involve a low temperature regime to promote nucleation of secondary phases and a second step at higher temperature for the growth of the secondary phases. The predicted results show that a yield strength of approximately 300MPa might be obtained in a shorter aging time, of approximately 30 minutes. As a result, better mechanical properties can be obtained by optimizing the time-temperature schedules for the precipitation hardening process of heat treatable aluminum alloys.

Original languageEnglish
Title of host publicationExtraction and Processing Division - EPD Congress 2013 - Held During the TMS 2013 Annual Meeting and Exhibition
PublisherMinerals, Metals and Materials Society
Pages87-94
Number of pages8
ISBN (Print)9781118605745
DOIs
StatePublished - 2013
EventEPD Congress 2013 - TMS 2013 Annual Meeting and Exhibition - San Antonio, TX, United States
Duration: Mar 3 2013Mar 7 2013

Publication series

NameTMS Annual Meeting

Conference

ConferenceEPD Congress 2013 - TMS 2013 Annual Meeting and Exhibition
Country/TerritoryUnited States
CitySan Antonio, TX
Period03/3/1303/7/13

Keywords

  • Age-hardening
  • Aluminum alloy
  • Precipitation
  • Yield strength

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