Hot tearing is a complex thermomechanical phenomenon occurring in the semi-solid region. Strain in this region can induce cracking and localized alloying element segregation. An apparatus for investigating hot tearing was developed utilizing a servo-motor controlled cylinder to apply a pre-determined amount of strain to the solidifying shell. A special mold was developed using filling and solidification modeling to ensure that dendrite growth was perpendicular to applied strain. A computer-automated system was utilized to control the strain and strain rate and measure the force and displacement. Solidification experiments utilizing AISI 1020 steel validated the apparatus capabilities and optimized testing parameters.

Meeting Name

AISTech 2020 (2020: Aug. 31-Sep. 3, Cleveland, OH)


Materials Science and Engineering

Research Center/Lab(s)

Peaslee Steel Manufacturing Research Center


This project was supported by Peaslee Steel Manufacturing Research Center (PSMRC) at Missouri University of Science and Technology (Missouri S&T).

Keywords and Phrases

Hot Tearing; Strain and Strain Rate; Directional Solidification

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2020 Association for Iron & Steel Technology (AIST), All rights reserved.

Publication Date

03 Sep 2020

Included in

Metallurgy Commons