Mehran University Research Journal Of Engineering &
Technology (HEC Recognized In Category "X")
Publishing Since 1982.



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Effect of Intercritical Heat Treatment on Mechanical Properties of Reinforcing Steel Bars

Keywords: Reinforcing Steel, Inter-critical Heat Treatment, Mechanical Properties

Mehran University Research Journal of Engineering & Technology

Volume 36 ,  Issue 3

MUHAMMAD  ISHAQUE  ABRO, RIAZ AHMED MEMON  ,IMTIAZ ALI SOOMRO  

Abstract

Intercritical heat treatments attempts were made to enhance the mechanical properties of reinforcing steel bars milled from scrap metal. For this, two grades of steel bars were obtained from different steel mills and their mechanical properties that include hardness, ultimate tensile strength, and percent elongation before and after intercritical heat treatment were determined. Results indicated that 25.5 and 17.6%, improvements in UTS (Ultimate Tensile Strength) and 18.8 and 14.3% improvement in percent elongation in two grades of reinforcing steel samples containing 0.17 and 0.24% carbon respectively was achieved while heating at 750oC for 2h. Appreciable improvement in the mechanical properties was noted due to birth of sufficient quantity of martensite along with ferrite