Microstructure and Properties of Electromagnetic Field-Assisted Laser-Clad Norem02 Iron-Based Cemented Carbide Coating.

Materials (Basel, Switzerland) · 2023 · Benefit · Insufficient evidence

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BenefitInsufficient evidencePaper 5767

Study snapshot

PublicationMaterials (Basel, Switzerland) · 2023

Study typeengineering

Reported directionBenefit

Evidence ratingInsufficient

Abstract

An electromagnetic field-assisted (EMF-assisted) laser cladding technique was used to prepare Norem02 iron-based cemented carbide coatings on 304 stainless steels. The coatings then were characterized in terms of their microstructure, microhardness, residual stress, and wear resistance. The results indicated that EMF did not change the phase composition of the Norem02 iron-based cemented carbide coating, but significantly affected its microstructure and properties. EMF accelerated the formation of more uniform and refined microstructure. With an increasing current intensity of EMF to 40 A, the dendritic and columnar crystal structure of the coating gradually transformed into uniform and fine equiaxed grains. However, when the EMF current intensity was increased to 80 A, a small number of small dendrites and columnar crystals began to appear at the top and bottom of the coating. Accordingly, the microhardness first increased, then decreased, and achieved a max of 376.9 HV at EMF current intensity of 40 A. EMF also improved the wear resistance of the coatings, reduced the cracking sensitivity, and reduced residual stress on the surface by 45.2%.

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Study typeengineering

Effect directionbenefit

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

Electromagnetic field (EMF)-assisted laser cladding of Norem02 iron-based cemented carbide coatings on 304 stainless steel did not change phase composition but altered microstructure and properties. Increasing EMF current to 40 A refined microstructure toward uniform equiaxed grains and increased microhardness (maximum 376.9 HV), while at 80 A some dendrites/columnar crystals reappeared and microhardness decreased. EMF improved wear resistance, reduced cracking sensitivity, and reduced surface residual stress by 45.2%.

Outcomes measured

Phase composition
Microstructure (grain structure)
Microhardness
Residual stress
Wear resistance
Cracking sensitivity

View raw extracted JSON

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    "band": null,
    "source": "electromagnetic field-assisted laser cladding",
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  "outcomes": [
    "Phase composition",
    "Microstructure (grain structure)",
    "Microhardness",
    "Residual stress",
    "Wear resistance",
    "Cracking sensitivity"
  ],
  "main_findings": "Electromagnetic field (EMF)-assisted laser cladding of Norem02 iron-based cemented carbide coatings on 304 stainless steel did not change phase composition but altered microstructure and properties. Increasing EMF current to 40 A refined microstructure toward uniform equiaxed grains and increased microhardness (maximum 376.9 HV), while at 80 A some dendrites/columnar crystals reappeared and microhardness decreased. EMF improved wear resistance, reduced cracking sensitivity, and reduced surface residual stress by 45.2%.",
  "effect_direction": "benefit",
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  "keywords": [
    "electromagnetic field-assisted",
    "laser cladding",
    "Norem02",
    "iron-based cemented carbide coating",
    "304 stainless steel",
    "microstructure",
    "microhardness",
    "residual stress",
    "wear resistance"
  ],
  "suggested_hubs": [
    {
      "slug": "engineering",
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      "reason": "Study evaluates electromagnetic field-assisted manufacturing (laser cladding) effects on coating microstructure and mechanical properties."
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}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.3390/ma16206774
PubMed: 37895755

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