Tensile Tests in AISI 4140 Steel

Mario Buchely is the Roberta and G. Robert Couch Assistant Professor in the Department of Material Science and Engineering (MSE) at Missouri University of Science and Technology (Missouri S&T). Recently named as an AIST Foundation Kent J. Peaslee Junior Faculty Award (KJPJFA) recipient, Dr. Buchely holds a key position within the Peaslee Steel Manufacturing Research Center (PSMRC) at Missouri S&T as a principal investigator.

Dr. Buchely's expertise lies in the thermo-mechanical characterization of steel at different strain rates and temperatures. He possesses a broad range of interests, including manufacturing processes such as casting, rolling, forging, and welding. His research also delves into areas such as heat treatment, phase transformation in steels, and computational simulations using finite element analysis.

As part of his KJPJFA activities, Dr. Buchely aims to inspire and engage the next generation of engineers and scientists, fostering their interest in the iron and steel industry. This outreach includes producing steel-focused videos to capture the interest of students to consider careers in the metallurgy field. “Tensile tests in AISI 4140 steel” is the first video of a series from Dr. Buchely.
Description:
Tensile test in flat specimens according to recommendation from ASTM E8 standard.
Tensile specimens were cut using waterjet along the rolling direction from a commercial 3/16” thick, 2” wide, cold rolled 4140 steel bars.
For the heat treatment, material was austenitized at 900ºC for 1hr, and i) slow cooled inside the furnace (furnace annealed), or ii) quench using forced air following by temper at 200ºC for 1hr.
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