You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass
    STP1365

    Influence of Post Processing on the Mechanical Properties of Investment Cast and Wrought Co-Cr-Mo Alloys

    Published: 01 January 1999


      Format Pages Price  
    PDF (168K) 9 $25   ADD TO CART
    Complete Source PDF (5.2M) 224 $88   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Abstract

    The mechanical properties of investment cast Co-Cr-Mo alloy (American Society for Testing and Materials F 75) can be affected to varying degrees by post cast processes such as solution treating (ST), hot isostatic pressing (HIP), sintering used to apply porous coatings, repair welding, abrasive blasting, and laser marking. The mechanical properties of the wrought version of the alloy (American Society for Testing and Materials F 1537) can be influenced by mill practices. Thermo-mechanical processing such as forging, will change the properties of mill products depending on forging practices. Post forging processes such as abrasive blasting and laser marking can affect the mechanical properties to varying degrees.

    Testing has shown that abrasive blasting has no significant effect on either alloy. Laser marking can reduce the fatigue strength of both alloys. Sintering the cast alloy will reduce the fatigue strength and that HIP will improve the fatigue strength of the sintered cast alloy. Also, the cast alloy can be repair welded with no loss in tensile properties.

    Keywords:

    sintering, fatigue, hot isostatic pressing, cobalt-chromium-molybdenum alloy, investment casting, wrought material, porous coatings


    Author Information:

    Berlin, RM
    Principal Research Engineer, Director and Assistant Director, Research and Development, Howmedica Inc., NJ

    Gustavson, LJ
    Principal Research Engineer, Director and Assistant Director, Research and Development, Howmedica Inc., NJ

    Wang, KK
    Principal Research Engineer, Director and Assistant Director, Research and Development, Howmedica Inc., NJ


    Committee/Subcommittee: F04.12

    DOI: 10.1520/STP14263S