STRUCTURE PROPERTIES RELATIONS HIPS IN HEAT TREATED LOW CARBON S TEEL

Document Type : Research Paper

Author

Materials Engineering Dept., College of Engineering, University of Al-Qadisiyah, AL-Diwaniyah, Iraq

10.30772/qjes.v10i4.496
Abstract
The samples of AISI 1018 Low carbon steel were heated to austenite zone then cooled in different mediums with different cooling rates. Mechanical tests show increase in hardness, yield strength, tensile strength, modulus of elasticity, and yield/tensile ratio as cooling rate is increase. Ductility has inverse proportionality to cooling rate. The resulting microstructures show decreasing in grains sizes accompanying to cooling rate increase. The relations between mechanical properties and grains size are opposites of relations between mechanical properties with cooling rates. Hardness, yield strength, tensile strength, modulus of elasticity, and yield/tensile ratio increase as grains size decreases, while ductility decreases.

Keywords


Volume 10, Issue 4
Autumn 2017
Pages 486-495

  • Receive Date 06 September 2017
  • Revise Date 31 October 2017
  • Accept Date 15 January 2018