Designing Pulse Laser Surface Modification of H13 Steel Using Response Surface Method

Journal Article · Mon Jan 17 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3552376· OSTI ID:21510154

Aqida, S N; Brabazon, D; Naher, S ^[1]

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1. Materials Processing Research Centre, Dublin City University, Dublin 9 (Ireland)

This paper presents a design of experiment (DOE) for laser surface modification process of AISI H13 tool steel in achieving the maximum hardness and minimum surface roughness at a range of modified layer depth. A Rofin DC-015 diffusion-cooled CO{sub 2} slab laser was used to process AISI H13 tool steel samples. Samples of 10 mm diameter were sectioned to 100 mm length in order to process a predefined circumferential area. The parameters selected for examination were laser peak power, overlap percentage and pulse repetition frequency (PRF). The response surface method with Box-Behnken design approach in Design Expert 7 software was used to design the H13 laser surface modification process. Metallographic study and image analysis were done to measure the modified layer depth. The modified surface roughness was measured using two-dimensional surface profilometer. The correlation of the three laser processing parameters and the modified surface properties was specified by plotting three-dimensional graph. The hardness properties were tested at 981 mN force. From metallographic study, the laser modified surface depth was between 37 {mu}m and 150 {mu}m. The average surface roughness recorded from the 2D profilometry was at a minimum value of 1.8 {mu}m. The maximum hardness achieved was between 728 and 905 HV{sub 0.1}. These findings are significant to modern development of hard coatings for wear resistant applications.

• OSTI ID: 21510154
• Journal Information: AIP Conference Proceedings, Vol. 1315, Issue 1; Conference: AMPT2010: International conference on advances in materials and processing technologies, Paris (France), 24-27 Oct 2010; Other Information: DOI: 10.1063/1.3552376; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON DIOXIDE
COATINGS
CORRELATIONS
DEPTH
DESIGN
DIFFUSION
HARDNESS
IMAGE PROCESSING
LASER RADIATION
LAYERS
METALLOGRAPHY
MODIFICATIONS
PEAK LOAD
ROUGHNESS
SCANNING ELECTRON MICROSCOPY
STEELS
SURFACES
THREE-DIMENSIONAL CALCULATIONS
TOOLS
TWO-DIMENSIONAL CALCULATIONS
ALLOYS
CARBON ADDITIONS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
EQUIPMENT
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PROCESSING
RADIATIONS
SURFACE PROPERTIES
TRANSITION ELEMENT ALLOYS