New Experimental Apparatus to Investigate Hot Tearing Behavior in Steel

Yanru Lu; Laura Bartlett; Ronald J. O'Malley; Semen Naumovich Lekakh; Mario F. Buchely; Simon N. Lekakh

doi:10.33313/380/157

New Experimental Apparatus to Investigate Hot Tearing Behavior in Steel

Yanru Lu
, Laura Bartlett
, Ronald J. O'Malley
, Semen Naumovich Lekakh
, Mario F. Buchely
, Simon N. Lekakh

Materials Science and Engineering

Missouri University of Science and Technology

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	American English
Journal	Proceedings of the AISTech 2020 (2020, Cleveland, OH)
DOIs	https://doi.org/10.33313/380/157
State	Published - Sep 3 2020

Keywords

Hot Tearing
Strain and Strain Rate
Directional Solidification

Disciplines

Metallurgy

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10.33313/380/157License: CC BY

New Experimental Apparatus to Investigate Hot Tearing Behavior inFinal published version, 928 KBLicense: CC BY

Cite this

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title = "New Experimental Apparatus to Investigate Hot Tearing Behavior in Steel",

abstract = " 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.",

keywords = "Hot Tearing, Strain and Strain Rate, Directional Solidification",

author = "Yanru Lu and Laura Bartlett and O'Malley, \{Ronald J.\} and Lekakh, \{Semen Naumovich\} and Buchely, \{Mario F.\} and Lekakh, \{Simon N.\}",

year = "2020",

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doi = "10.33313/380/157",

language = "American English",

journal = "Proceedings of the AISTech 2020 (2020, Cleveland, OH)",

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AU - Lu, Yanru

AU - Bartlett, Laura

AU - O'Malley, Ronald J.

AU - Lekakh, Semen Naumovich

AU - Buchely, Mario F.

AU - Lekakh, Simon N.

PY - 2020/9/3

Y1 - 2020/9/3

N2 - 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.

AB - 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.

KW - Hot Tearing

KW - Strain and Strain Rate

KW - Directional Solidification

UR - https://scholarsmine.mst.edu/matsci_eng_facwork/2698

U2 - 10.33313/380/157

DO - 10.33313/380/157

M3 - Article

JO - Proceedings of the AISTech 2020 (2020, Cleveland, OH)

JF - Proceedings of the AISTech 2020 (2020, Cleveland, OH)

ER -

New Experimental Apparatus to Investigate Hot Tearing Behavior in Steel

Abstract

Keywords

Disciplines

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