Correlation between the Deformation and Post-deformation Softening Behaviours in Hot Worked Austenite

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概要

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• The relation between the deformation and post-deformation softening behaviours of austenite is examined in a 304 stainless steel. This correlation has been exploited in the modelling of hot rolling and it is argued here that the key to this understanding lies in the deformation structure. The latter is characterized in the present work by the fraction of dynamic recrystallization. The value of this fraction at the peak in the flow stress curve is found to decrease with increasing stress (i.e. with decreasing temperature and increasing strain rate). By contrast, the fraction of dynamic recrystallization at the strain corresponding to the point where post-deformation softening becomes strain independent is found to be constant. These observations are used to explain the nature of the important difference between the flow curve peak and the onset of strain independent post-deformation softening.

• 社団法人 日本鉄鋼協会の論文
• 2008-02-15

著者

• Jonas John

  Department of Metals and Materials Engineering, McGill University

• Hodgson Peter.

  Centre For Materials And Fibre Innovation Deakin University

• Jonas John

  Department Of Materials Engineering Mcgill University

• DEHGHAN-MANSHADI Ali

  Faculty of Engineering, University of Wollongong

• BARNETT Matthew

  Centre for Materials and Fibre Innovation, Deakin University

• Barnett Matthew

  Centre For Materials And Fibre Innovation Deakin Univ.

• Barnett Matthew

  Centre For Materials And Fibre Innovation Deakin University

• Dehghan-manshadi Ali

  Faculty Of Engineering University Of Wollongong

関連論文

• The Ferrite Transformation in Hot Deformed 0.036% Nb Austenite at Temperatures Above the Ae3
• The Dynamic, Static and Metadynamic Recrystallization of a Nb-microalloyed Steel
• Effect of Chromium, Boron and Manganese Additions on the Deformation and Recrystallization Textures of Warm Rolled Low Carbon Steels
• The Deformation Microstructure and Recrystallization Behavior of Warm Rolled Steels
• Effect of alloying elements on the microstructure and texture of warm rolled steels
• Correlation between the Deformation and Post-deformation Softening Behaviours in Hot Worked Austenite
• Effect of Processing Schedule on the Microstructure and Texture of 0.78wt% Cr Extra-low-carbon Steel
• Dynamic Recrystallization of Austenitic Stainless Steel under Multiple Peak Flow Behaviours
• The Formation of Deformatio Induced Ferrite during Mechanical Testing
• Predicting the Critical Stress for Initiation of Dynamic Recrystallization
• Softening and Flow Stress Behaviour of Nb Microalloyed Steels during Hot Rolling Simulation
• Effect of Microstructure on the Cold Headability of a Medium Carbon Steel
• The Ferrite Transformation in Hot Deformed 0.036% Nb Austenite at Temperatures Above the Ae_3
• An Analysis of the Transition between Strain Dependent and Independent Softening in Austenite
• AIN Precipitation in Dual-phase 3% Si Electrical Steels
• The Hot Strip Mill as an Experimental Tool
• Effect of Finishing Temperature on Hot Band Textures in an IF Steel
• Effect of Silicon on the Kinetics of Nb(C, N)Precipitation during the Hot Working of Nb-bearing Steels
• Dynamic Transformation of a Low Carbon Steel at Temperatures above the Ae_3
• The Critical Strain for Dynamic Transformation in Hot Deformed Austenite
• Dynamic Transformation Behavior of a Deformed High Carbon Steel at Temperatures Above the Ae3
• The Critical Strain for Dynamic Transformation in Hot Deformed Austenite

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