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International Journal of Automotive Technology

, Volume 19, Issue 6, pp 1055–1059 | Cite as

Creep Life Prediction of Alloy 718 for Automotive Engine Materials

  • Yu Sik Kong
  • Jiyoung Yu
  • Young Whan ParkEmail author
Article
  • 14 Downloads

Abstract

This study was carried out to investigate the creep life at the high temperature of the Alloy 718 for automotive engine components using the initial strain parameter method (ISPM). Creep tests have performed at elevated temperatures in the range of 550 oC to 700 oC in this work. We also carried out constant stress creep tests. The initial strains were measured during 1 minute after loading. Both the creep stress and rupture time depend on the initial strain. We calculated the creep life of Alloy 718 by using the creep life prediction equations obtained from the ISPM. Then, we compared the creep life predicted by the ISPM to the Larson-Miller parameter (LMP). The experimental rupture time and the calculated rupture time by using the ISPM agreed with a confidence level of 95 %. The creep life predicted by using the ISPM was in very good agreement with the creep life predicted using the LMP method.

Key Words

Initial Strain Parameter Method (ISPM) Elevated temperatures Ni-based Alloy 718 Creep life prediction Larson-Miller Parameter (LMP) 

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Copyright information

© The Korean Society of Automotive Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Deptment of Mechanical EngineeringPukyong National UniversityBusanKorea
  2. 2.Technical Research CenterHyundai Steel CompanyChungnamKorea

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