Characterization of the Bake-hardening Behavior of Transformation Induced Plasticity and Dual-phase Steels Using Advanced Analytical Techniques

スポンサーリンク

概要

• 論文の詳細を見る

• The bake-hardening (BH) behavior of TRansformation Induced Plasticity (TRIP) and Dual-Phase (DP) steels after intercritical annealing (IA) has been studied using transmission electron microscopy, X-ray diffraction and three dimensional atom probe tomography. It was found for the DP steel that carbon can segregate to dislocations in the ferrite plastic deformation zones where there is a high dislocation density around the “as-quenched” martensite. The carbon pinning of these dislocations, in turn, increases the yield strength after aging. It was shown that bake-hardening also leads to rearrangement of carbon in the martensite leading to the formation of rod-like low temperature carbides in the DP steel. Segregation of carbon to microtwins in retained austenite of the TRIP steel was also evident. These factors, in combination with the dislocation rearrangement in ferrite through the formation of cells and microbands in the TRIP steel after pre-straining, lead to the different bake-hardening responses of the two steels.

著者

• Timokhina Ilana

  Centre for Material and Fibre Innovation, Deakin University

• Pereloma E.

  School of Mechanical, Materials and Mechatronic Engineering, The University of Wollongong

• Ringer S.

  Australia Key Centre for Microscopy and Microanalysis, University of Sydney

• Zheng R.

  Australia Key Centre for Microscopy and Microanalysis, University of Sydney

• Hodgson P.

  Centre for Material and Fibre Innovation, Deakin University

関連論文

• Characterization of the Bake-hardening Behavior of Transformation Induced Plasticity and Dual-phase Steels Using Advanced Analytical Techniques
• Effect of Alloying Elements on the Microstructure and Texture of Warm Rolled Steels
• TEM Characterization of the Recrystallization Behaviour of Warm Rolled Low Carbon Steels Containing Chromium during the Early Stages of Annealing
• Characterization of the Bake-hardening Behavior of Transformation Induced Plasticity and Dual-phase Steels Using Advanced Analytical Techniques

スポンサーリンク