Effect of the cross-rolling and austempering heat treatment on the microstructure, texture, and mechanical properties of a low alloyed steel used in rotary cutting tools

The development of uniform tensile properties in cold-rolled BCC metals is generally achieved by annealing. The final microstructure of these components is typically characterized as having a rather coarse microstructure and therefore lower tensile properties. Cross-rolling offers a great potential...

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Bibliographic Details
Published inInternational journal of advanced manufacturing technology Vol. 120; no. 5-6; pp. 3787 - 3804
Main Authors M. Shirazi, Hamidreza, Georges, Rémi, Hernandez, Roger, Blais, Carl
Format Journal Article
LanguageEnglish
Published London Springer London 01.05.2022
Springer Nature B.V
Subjects
Austempering
BCC metals
CAE) and Design
Computer-Aided Engineering (CAD
Cross rolling
Crystallography
Cutting tools
Deformation
Engineering
Heat treating
Heat treatment
Industrial and Production Engineering
Low alloy steels
Low temperature
Mechanical Engineering
Mechanical properties
Media Management
Metal sheets
Microstructure
Original Article
Production methods
Tensile properties
Texture
Austempering
Crystallographic texture
Microstructure
Cross-rolling
Q&T
Tensile properties
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Summary:The development of uniform tensile properties in cold-rolled BCC metals is generally achieved by annealing. The final microstructure of these components is typically characterized as having a rather coarse microstructure and therefore lower tensile properties. Cross-rolling offers a great potential of homogenizing the microstructure without losing the benefits of the rolled microstructure and crystallographic texture. The research summarized below examines the effect of cross-rolling and an austempering heat treatment on the mechanical properties of the AISI 8670 steel sheets. Comparison with the conventional production methods was performed to quantify the efficiency of the new deformation and heat treatment approach. The results clearly indicate that the combination of cross-rolling and low temperature austempering generates favorable isotropic mechanical properties by creating uniform strength of α and ε fiber textures and homogeneous lower bainitic microstructure. Increases in UTS and toughness of 40% and 57% respectively were systematically obtained with the new combination of deformation path and heat treatment.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-022-08911-z