Evolution of microstructure for laser clad fe-cr-mn-c alloys

Jogender Singh, Jyotirmoy Mazumder

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The laser surface cladding technique was used to form in situ Fe-Cr-Mn-C alloys on AISI 1016 steel substrate. In this process mixed powders containing Cr, Mn, and C with a ratio of 10:1:1 were delivered using a screw feed, gravity flow carrier gas aided system into the melt pool generated by a 10 kW C02 laser. This technique produced ultrafine microstructure in the cladded alloy. The microstructure of the laser surface cladded region was investigated by optical, scanning and transmission electron microscopy and x-ray microanalysis techniques. Microstructural study showed a high degree of grain refinement and an increase in solid solubility of alloying elements which, in turn, produced a fine distribution of complex types of carbide precipitates in the ferrite matrix because of the high cooling rate. An alloy of this composition does not show any martensitic or retained austenite phase.

Original languageEnglish (US)
Pages (from-to)235-244
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume650
DOIs
StatePublished - Oct 21 1986

Fingerprint

Microstructure
Laser
microstructure
Lasers
lasers
Steel
Grain refinement
Solubility
Microanalysis
screws
Transmission Electron Microscopy
Alloying elements
Light transmission
Scanning Electron Microscopy
austenite
microanalysis
Powder
carbides
Austenite
Powders

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

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abstract = "The laser surface cladding technique was used to form in situ Fe-Cr-Mn-C alloys on AISI 1016 steel substrate. In this process mixed powders containing Cr, Mn, and C with a ratio of 10:1:1 were delivered using a screw feed, gravity flow carrier gas aided system into the melt pool generated by a 10 kW C02 laser. This technique produced ultrafine microstructure in the cladded alloy. The microstructure of the laser surface cladded region was investigated by optical, scanning and transmission electron microscopy and x-ray microanalysis techniques. Microstructural study showed a high degree of grain refinement and an increase in solid solubility of alloying elements which, in turn, produced a fine distribution of complex types of carbide precipitates in the ferrite matrix because of the high cooling rate. An alloy of this composition does not show any martensitic or retained austenite phase.",
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Evolution of microstructure for laser clad fe-cr-mn-c alloys. / Singh, Jogender; Mazumder, Jyotirmoy.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 650, 21.10.1986, p. 235-244.

Research output: Contribution to journalArticle

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