Characteristic microstructure of micro hot rolled plate steel variating the radius of bending treatment with quenching and tempering heat treatment

Istrazivanja i projektovanja za privredu

Taufik Achmad¹  As'ad Sonief Ahmad²  Suprapto Agus² 

[1] Brawijaya University, Faculty of Engineering, Department of Mechanical Engineering, Malang, Indonesia + National Institute of Technology, FTI, Department of Mechanical Engineering, Malang, Indonesia;Brawijaya University, Faculty of Engineering, Department of Mechanical Engineering, Malang, Indonesia;

关键词: bending;    heat treatment;    microstructure;   

DOI  :  

来源: DOAJ

【 摘 要 】

HRP Steel is heat treatable material that is manufactured by Krakatu Company Steel Indonesian, which the specification of HRP steel is classified as an armor 2nd class. To get the hardness and high strength, it is quenched (by heating it up to austenite temperature and held for a few moments, then cooled with water at T °C).Then the HRP Steel is heat treated again tempering (by heating it up to a certain temperature below the eutectoid line and retained for a while, then cooled with atmospheric air media) to improve its ductility. The purpose of this heat treatment is to improve the microstructure that can affect the value of hardness. There are two additional (?) methods used in this research for treatment of that material: mechanical bending treatment with radius 55 mm and 60 mm. Analysis of the results of research shows that bending treatment and heat treatment modifies the morphology of microstructure. In the 55 mm bending radius treatment and quenching-tempering treatment, a microstructure formed of martensite structure that has higher percentage and has the form of a smooth martensite structure so that the value of Vickers hardness number is higher than the other treatment of 453 VHN treatment.

【 授权许可】

Unknown