Volume 16, Issue 3 (May 1988)

    Effect of Nonmetallic Inclusions on Some Ductility Parameters of Hot-Rolled Steel Sheet

    (Received 8 June 1986; accepted 16 November 1987)

    CODEN: JTEOAD

      Format Pages Price  
    PDF Version 7 $25   ADD TO CART


    Abstract

    Nonmetallic inclusions have detrimental effects on ductility parameters such as elongation and reduction in area obtained in tension testing. Moreover, inclusions elongated in the rolling direction cause distinct anisotropy of these parameters.

    This paper gives a demonstration of how this anisotropy can be utilized to assess the effect of elongated inclusions on the ductility of steel sheet. Other factors (e.g., sheet thickness and steel strength) that also influence the ductility are eliminated by taking the difference between the values of the ductility parameters in the longitudinal (rolling) and the transverse directions. Replicate tests and methods of mathematical statistics are employed in estimating the sensitivity of the different ductility parameters to nonmetallic inclusions. Tension specimens with special forms (twice perforated and V-notched specimens) have been devised to increase the sensitivity of the ductility parameters. Reduction in area is found to be a much more discriminating parameter than elongation at fracture.


    Author Information:

    Pretnar, B
    Head of the Development Section, ISKRA ELEMENTI, TOZD Upori, Šentjernej,

    Yebuah, RAN
    Senior Staff Research Engineer, Head of the Materials Laboratory, Development Institute, Industrija Motornih Vozil, Novo Mesto,


    Stock #: JTE10383J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10383J

    ASTM International is a member of CrossRef.

    Author
    Title Effect of Nonmetallic Inclusions on Some Ductility Parameters of Hot-Rolled Steel Sheet
    Symposium , 0000-00-00
    Committee E28