Surface hardening of AISI 4340 steel by laser linear oscillation scanning

F. Qiu (Corresponding Author), Veli Kujanpää

    Research output: Contribution to journalArticleScientificpeer-review

    5 Citations (Scopus)

    Abstract

    This study investigated the surface hardening of AISI 4340 steel by linear oscillation scanning with a fibre laser. Various frequencies and amplitudes of oscillation were used under laser power of 2020 and 3020 W. Microscopic evaluation was done, and the effect of oscillation frequency on the hardened depth was examined. Hardness profiles were measured along the centre of the irradiated track toward the feeding direction of the laser, across the irradiated width and into the depth below the irradiated surface. The homogeneity of hardness and hardened depth with different processing parameters was investigated. The hardness profiles were compared with the results obtained with conventional single track hardening.
    Original languageEnglish
    Pages (from-to)569-575
    Number of pages6
    JournalSurface Engineering
    Volume28
    Issue number8
    DOIs
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Steel
    hardening
    Hardening
    hardness
    Hardness
    steels
    Scanning
    oscillations
    scanning
    Lasers
    lasers
    Fiber lasers
    profiles
    homogeneity
    fiber lasers
    evaluation
    Processing

    Keywords

    • 4340 steel
    • fibre laser
    • hardening
    • multitrack
    • oscillation scanning
    • surface treatment

    Cite this

    Qiu, F. ; Kujanpää, Veli. / Surface hardening of AISI 4340 steel by laser linear oscillation scanning. In: Surface Engineering. 2012 ; Vol. 28, No. 8. pp. 569-575.
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    author = "F. Qiu and Veli Kujanp{\"a}{\"a}",
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    Surface hardening of AISI 4340 steel by laser linear oscillation scanning. / Qiu, F. (Corresponding Author); Kujanpää, Veli.

    In: Surface Engineering, Vol. 28, No. 8, 2012, p. 569-575.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

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    AU - Qiu, F.

    AU - Kujanpää, Veli

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    KW - 4340 steel

    KW - fibre laser

    KW - hardening

    KW - multitrack

    KW - oscillation scanning

    KW - surface treatment

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