Effect of V on the tensile strength of sintered Cr-Mo alloyed steel powder compacts

Shigeru Unami, Osamu Furukimi, Satoshi Uenosono, Kuniaki Ogura

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    A prealloyed 1Cr-0.3Mo-0.3V(mass%) steel powder was developed to obtain the high strength sintered compacts. This new sintered 1Cr-0.3Mo-0.3V powder compact, which is Mn-less, made it possible to extend the range of the cooling rate after sintering to attain higher strength than that of sintered 1Cr-0.3Mo steel, and gave a tensile strength of more than 800 MPa and a rotating bending fatigue strength of 310MPa at the cooling rates of 1 to 30°C/min. The wide range of cooling rates at which high strength can be obtained was attributed to a decrease in hardenability and the production of a fine pearlite structure by V addition. The improvement of the strength for the compacts added V is attributed to the precipitation hardening of V carbonitrides, as well as a narrow pearlite lamellar spacing.

    Original languageEnglish
    Pages (from-to)1106-1110
    Number of pages5
    JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
    Volume43
    Issue number9
    DOIs
    Publication statusPublished - Sep 1996

    All Science Journal Classification (ASJC) codes

    • Mechanical Engineering
    • Industrial and Manufacturing Engineering
    • Metals and Alloys
    • Materials Chemistry

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