Surface Roughness of Laser Modified Die Surface Change Under Thermal Cyclic Loading

  • Annie Lau Sheng
  • Izwan IsmailEmail author
  • Fazliana Fauzun
  • Syarifah Nur Aqida
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


Thermal fatigue crack results in decrease of die service life has brought to a significant loss in the die casting industry due to the high cost of die. Laser surface modification is proposed in this study to enhance the surface properties of die and increase the resistance of thermal crack. In this study, the changes of surface roughness of laser modified die surface were investigated during thermal cyclic loading. H13 tool steel samples were sectioned while the surface of the samples were laser modified at different parameters. Laser modified samples were subjected to thermal cyclic loading by continuously heating in molten aluminium and cooling in water bath at respective temperature range of 850–900 °C and 27 °C. The results of surface roughness and morphology were obtained using a display optical microscope after 3000, 4000 and 5000 cycles of thermal cyclic loading. The surface roughness of laser modified tool steel with hardness properties of 745 HV experienced the least changes throughout the thermal cyclic loading process. The minimal changes of surface roughness on the laser modified die reduces the formation of the oxide layer and thus reduces the thermal fatigue of die casting dies.


Die casting Surface roughness Thermal crack 



The authors would like to acknowledge the Ministry of Education Malaysia (MOE) for the funding of this research under the Fundamental Research Grant Scheme (FRGS/1/2016/TK03/UMP/02/4) RDU160141.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Annie Lau Sheng
    • 1
  • Izwan Ismail
    • 1
    • 2
    • 3
    Email author
  • Fazliana Fauzun
    • 1
  • Syarifah Nur Aqida
    • 1
    • 2
  1. 1.Faculty of Mechanical & Manufacturing EngineeringUniversity Malaysia PahangPekanMalaysia
  2. 2.Automotive Engineering CentreUniversity Malaysia PahangPekanMalaysia
  3. 3.Centre of Excellence for Advanced Research in Fluid Flow (CARIFF)University Malaysia PahangGambangMalaysia

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