The Effect of Quenching and Tempering Conditions on The Hardness of AISI 1045, Medium carbon Steel
Banu Nursanni- Iis Siti Jahro- Hidir Effendi- Sapitri Januariyansah

Mechanical Engineering Education, Faculty of Engineering, Universitas Negeri Medan, North Sumatera, Indonesia and Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, North Sumatera, Indonesia

Abstract

In the industrial world, metal is a fundamental material that supports human life and technological advancement. One approach for forming metal is through heat treatment. The purpose of this study is to examine the effect of a microstructure of metal and hardness after heat treatment with quenching and tempering. In this investigation, a version of the Heat treatment procedure was utilized, with a temperature of 850 C and a holding duration of 30 minutes, followed by quenching with water, oil, and air and tempering at 400 C, 500 C, and 600 C for 30, 45, and 60 minutes. Hardness testing uses the micro-Vickers Hardness Test method, with 5 sample points and a main load (P) of 50 kgf. The microstructure test revealed density variations in ferrite, pearlite, and martensite crystal grains.

Keywords: heat treatment, quenching, tempering, medium carbon steel, hardness

Topic: Sciences, Engineering and Material Science