Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming

This paper presents laser surface modification work performed to improve the lifetime of die materials. Die material AISI H13, with typical hardness in the range of 42 to 48 HRC, offers high wear and corrosion resistance. However the cyclic high temperature conditions along with exposure to high v...

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Main Authors:	S. N., Aqida, Maurel, M, Brabazon, D., Naher, Sumsun, Rosso, M
Format:	Article
Language:	English
Published:	Springer Link 2009
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/1723/ http://umpir.ump.edu.my/id/eprint/1723/ http://umpir.ump.edu.my/id/eprint/1723/ http://umpir.ump.edu.my/id/eprint/1723/1/Thermal_stability_of_laser_treated_die_material_for_semi-solid_metal_forming.pdf

id	ump-1723
recordtype	eprints
spelling	ump-17232017-07-21T03:28:09Z http://umpir.ump.edu.my/id/eprint/1723/ Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming S. N., Aqida Maurel, M Brabazon, D. Naher, Sumsun Rosso, M TJ Mechanical engineering and machinery This paper presents laser surface modification work performed to improve the lifetime of die materials. Die material AISI H13, with typical hardness in the range of 42 to 48 HRC, offers high wear and corrosion resistance. However the cyclic high temperature conditions along with exposure to high viscosity molten metal in semi6solid forming cause the die to wear and crack with resultant shortened die lifetime. In this study, the thermal stability of die material at elevated temperature was investigated through micro6hardness testing and a metallographic study. AISI H13 samples were laser glazed using CO2 continuous wave mode laser with 10.6 9m wavelength. Samples were attached to a specially designed rotating chuck to enable it to be rotated at speeds up to 1500 rpm and allow flat surface glazing to take place. The microhardness was measured for as6glazed samples and annealed samples which were held at temperatures ranging from 550oC to 800oC with 50oC intervals. The metallographic study conducted examined the formation of three zones at different depths which were the glazed zone, the heat affected zone and the substrate. As a result of rapid heating and cooling from the laser glazing process, a metallic glass layer was developed which exhibited an average micro6hardness of 900 HV when exposed to 3.34E+10 W/m2 laser irradiance within a range of 3.64 to 5.66 ms exposure time. Crystallization in glazed zone increased as the annealing temperature increased. As the annealing temperature reached above approximately 600oC, the microhardness decreased to approximately 600 HV (equivalent to approx. 54 HRC) due to local crystallization. These findings show potential direct application of glazed dies for non6ferrous semisolid forming and the requirement for thermal barrier protection for application at higher temperatures. Springer Link 2009 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/1723/1/Thermal_stability_of_laser_treated_die_material_for_semi-solid_metal_forming.pdf S. N., Aqida and Maurel, M and Brabazon, D. and Naher, Sumsun and Rosso, M (2009) Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming. International Journal of Material Forming, 2. pp. 761-764. http://www.springerlink.com/content/w18773623t128782/ DOI: 10.1007/s12289-009-0540-7
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery S. N., Aqida Maurel, M Brabazon, D. Naher, Sumsun Rosso, M Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming
description	This paper presents laser surface modification work performed to improve the lifetime of die materials. Die material AISI H13, with typical hardness in the range of 42 to 48 HRC, offers high wear and corrosion resistance. However the cyclic high temperature conditions along with exposure to high viscosity molten metal in semi6solid forming cause the die to wear and crack with resultant shortened die lifetime. In this study, the thermal stability of die material at elevated temperature was investigated through micro6hardness testing and a metallographic study. AISI H13 samples were laser glazed using CO2 continuous wave mode laser with 10.6 9m wavelength. Samples were attached to a specially designed rotating chuck to enable it to be rotated at speeds up to 1500 rpm and allow flat surface glazing to take place. The microhardness was measured for as6glazed samples and annealed samples which were held at temperatures ranging from 550oC to 800oC with 50oC intervals. The metallographic study conducted examined the formation of three zones at different depths which were the glazed zone, the heat affected zone and the substrate. As a result of rapid heating and cooling from the laser glazing process, a metallic glass layer was developed which exhibited an average micro6hardness of 900 HV when exposed to 3.34E+10 W/m2 laser irradiance within a range of 3.64 to 5.66 ms exposure time. Crystallization in glazed zone increased as the annealing temperature increased. As the annealing temperature reached above approximately 600oC, the microhardness decreased to approximately 600 HV (equivalent to approx. 54 HRC) due to local crystallization. These findings show potential direct application of glazed dies for non6ferrous semisolid forming and the requirement for thermal barrier protection for application at higher temperatures.
format	Article
author	S. N., Aqida Maurel, M Brabazon, D. Naher, Sumsun Rosso, M
author_facet	S. N., Aqida Maurel, M Brabazon, D. Naher, Sumsun Rosso, M
author_sort	S. N., Aqida
title	Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming
title_short	Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming
title_full	Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming
title_fullStr	Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming
title_full_unstemmed	Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming
title_sort	thermal stability of laser treated die material for semi-solid metal forming
publisher	Springer Link
publishDate	2009
url	http://umpir.ump.edu.my/id/eprint/1723/ http://umpir.ump.edu.my/id/eprint/1723/ http://umpir.ump.edu.my/id/eprint/1723/ http://umpir.ump.edu.my/id/eprint/1723/1/Thermal_stability_of_laser_treated_die_material_for_semi-solid_metal_forming.pdf
first_indexed	2023-09-18T21:54:55Z
last_indexed	2023-09-18T21:54:55Z
_version_	1777414014313168896

Thermal Stability Of Laser Treated Die Material For Semi-Solid Metal Forming

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