EFFECTS OF HOLD TIMES, PRE-NOTCHING, AND ENVIRONMENT ON THE ELEVATED TEMPERATURE FATIGUE LIFE OF BAINITIC 2. 25 Cr - 1 Mo STEEL.

B. A. Kschinka, James F Stubbins

Research output: Contribution to journalArticle

Abstract

The initial strength advantage obtained by the bainitic microstructure, gained by quenching, is lost via cyclic softening. The introduction of a hold period into the cyclic waveform, regardless of its type or duration, significantly reduces fatigue life. Compared to results obtained in air, vacuum enhances life at least two-fold. Both crack initiation and propogation are inhibited in the absence of oxidation. Environmental interaction may well be more important than creep damage in the low-cycle fatigue regime.

Original languageEnglish (US)
Pages (from-to)87-91
Number of pages5
JournalAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume114
StatePublished - 1986

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

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