Faculty Advisor

Sisson, Richard D.

Faculty Advisor

Kmiotek, Stephen J.

Abstract

A series of experiments were conducted to determine the isothermal kinetics of the austenite to bainite transformation in 52100 steel at 230 and 240 oC. The steel was austenitized at 850 oC for 30 minutes and quenched in liquid salt. The percent Bainite was determined using a linearized relationship with HRC data, and qualitative data for the microstructure was determined using x-ray diffraction (XRD). It was found that the bainitic transformation started and finished earlier at 240 oC. The HRC data indicated a complete transformation at about 40 minutes for both 230 and 240 oC trials, but XRD for both showed retained austenite after these points. XRD data indicates no retained austenite after 80 minutes, implying a complete transformation at 80 minutes rather than at 40 minutes.

Publisher

Worcester Polytechnic Institute

Date Accepted

2020-05-11

Major

Chemical Engineering

Major

Chemical Engineering

Project Type

Major Qualifying Project

Accessibility

Unrestricted

Advisor Department

Mechanical Engineering

Advisor Department

Chemical Engineering

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