STP556

    Alloy, Texture, and Microstructural Effects on the Yield Stress and Mixed Mode Fracture Toughness of Titanium

    Published: Jan 1974


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    Abstract

    The mixed mode fracture toughness, KQ, behavior of alpha-beta titanium alloys was examined in terms of: (1) alloy effects of aluminum, oxygen, and beta stabilizer, (2) processing effects of hot-roll and anneal temperatures, and (3) test direction. In the Ti-4V alloy system, alloying and processing effects interact in their influence on KQ in a complex manner. In the Ti-2Mo alloy system, oxygen depresses KQ after alpha-beta rolling, whereas aluminum has a similar effect after beta rolling; in each case the alloy effect dominates that of yield strength. In the overall analysis, texture as implied by a test direction effect, significantly influences KQ. The oxygen, texture, and microstructural effects on KO were shown by statistical methods to qualitatively parallel findings in the literature on titanium alloys regarding the effects of these variables on KIc.

    Keywords:

    fracture properties, fracture (materials), texture, mechanical properties, evaluation, titanium containing alloys, microstructure, titanium alloys, Widmanstätten structure, statistical analysis, interstitial solutions, toughness, cryogenics


    Author Information:

    Rosenberg, HW
    Supervisor, Metallurgical Research, and senior research metallurgist, Henderson Technical Laboratories, TIMET, Henderson, Nev.

    Parris, WM
    Supervisor, Metallurgical Research, and senior research metallurgist, Henderson Technical Laboratories, TIMET, Henderson, Nev.


    Paper ID: STP33121S

    Committee/Subcommittee: E08.04

    DOI: 10.1520/STP33121S


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