Optimization of processing parameters of cooling slope process for semi-solid casting of ADC 12 Al alloy

  • Sujeet Kumar Gautam
  • Nilrudra Mandal
  • Himadri Roy
  • Aditya Kumar Lohar
  • Sudip Kumar Samanta
  • Goutam Sutradhar
Technical Paper


In the present work, the effect of processing parameters of cooling slope techniques (pouring temperature, slope angle and slope length) of ADC 12 Al alloy on its microstructural evolution has been studied in detail. A series of cooling slope casting experiments were conducted by varying the pouring temperature (580, 585 and 590 °C), slope length (400, 500 and 600 mm) and slope angle (30°, 45° and 60°). The effect of processing parameters on the response factors, viz. degree of sphericity and particle size, has been investigated by applying analysis of variance (ANOVA), interaction graphs obtained using response surface methodology. The obtained results infer that optimum values of the degree of sphericity (0.865) and particle size (49.30) are observed for the following set of processing parameters, namely 585 °C pouring temperature, 500 mm slope length and 45° slope angle. ANOVA results show that the pouring temperature is the most significant input variables that influence degree of sphericity and particle size followed by slope length and slope angle. The values of output variables obtained from confirmation experiment, performed at 95% confidence level, ensure that they are well within the permissible limits.


Semi-solid processing Cooling slope process Response surface methodology ANOVA 



The authors would like to thank Director, CSIR-Central Mechanical Engineering Research Institute (CMERI) for his kind permission to carry out and publish this work. The authors would like to acknowledge the help rendered by Central Research Facility, CMERI-Durgapur, for material characterization. The authors express their heartfelt gratitude to AdMaC Group (Anmol Khalkho and Anup Rajak) staffs for their support throughout the work.


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Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Authors and Affiliations

  • Sujeet Kumar Gautam
    • 1
    • 4
  • Nilrudra Mandal
    • 2
  • Himadri Roy
    • 3
  • Aditya Kumar Lohar
    • 1
  • Sudip Kumar Samanta
    • 1
  • Goutam Sutradhar
    • 4
  1. 1.Advanced Manufacturing CentreCSIR-Central Mechanical Engineering Research InstituteDurgapurIndia
  2. 2.Centre for Advanced Materials ProcessingCSIR-Central Mechanical Engineering Research InstituteDurgapurIndia
  3. 3.NDT and Metallurgy GroupCSIR-Central Mechanical Engineering Research InstituteDurgapurIndia
  4. 4.Department of Mechanical EngineeringJadavpur UniversityCalcuttaIndia

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