An Abnormal Increase of Fatigue Life with Dwell Time during Creep-Fatigue Deformation for Directionally Solidified Ni-Based Superalloy DZ445

Abstract: The paper investigated the creep-fatigue behavior for directionally solidified nickel-based superalloy DZ445 at 900 °C. It is found that the fatigue life shows an abnormal increase when the dwell time exceeds a critical value during creep-fatigue deformation. The area of hysteresis loop and fractograph explain the phenomenon quite well. The shortest life corresponds to the maximal area of hysteresis loop, i. e. the maximum energy to be consumed during the creep-fatigue cycle. The fractographic observation of failed samples further supports the abnormal behavior of fatigue life.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
An Abnormal Increase of Fatigue Life with Dwell Time during Creep-Fatigue Deformation for Directionally Solidified Ni-Based Superalloy DZ445 ; volume:37 ; number:3 ; year:2018 ; pages:277-284 ; extent:8
High temperature materials and processes ; 37, Heft 3 (2018), 277-284 (gesamt 8)

Urheber
Ding, Biao
Ren, Weili
Deng, Kang
Li, Haitao
Liang, Yongchun

DOI
10.1515/htmp-2016-0079
URN
urn:nbn:de:101:1-2501280308154.485310151453
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:36 MESZ

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Beteiligte

  • Ding, Biao
  • Ren, Weili
  • Deng, Kang
  • Li, Haitao
  • Liang, Yongchun

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