STP808

    Novel Test Specimens for Workability Testing

    Published: Jan 1983


      Format Pages Price  
    PDF Version (172K) 12 $25   ADD TO CART
    Complete Source PDF (5.0M) 12 $55   ADD TO CART


    Abstract

    Previous work showed that fracture in compression tests initiates at the equatorial surface over a range of axial compression/circumferential tension strain combinations. A refined test technique has been developed that extends the range of strains over which experimental measurements of fracture can be made. In addition to upset compression tests on cylindrical specimens, flanged and tapered compression tests have been performed that give strain states in the small strain region of the fracture locus. Partial extrusion tests were also performed to provide strains in the first quadrant of the strain coordinate plane. Materials tested include 2024 aluminum alloy, 1045 medium carbon steel, and a sintered powder steel. Most tests were carried out at room temperature, but the aluminum alloy was also tested at hot working temperatures. Results are compared with the theoretical criteria of fracture and fracture locus predictions.

    Keywords:

    compression, fracture, workability, aluminum, steel, powder metals, elevated temperature


    Author Information:

    Erman, E
    University of Pittsburgh, Pittsburgh, Pa.

    Kuhn, HA
    University of Pittsburgh, Pittsburgh, Pa.

    Fitzsimons, G
    University of Pittsburgh, Pittsburgh, Pa.


    Paper ID: STP36209S

    Committee/Subcommittee: E28.02

    DOI: 10.1520/STP36209S


    CrossRef ASTM International is a member of CrossRef.