Strain Rate Dependent Ductility and Strain Hardening in Q&P Steels

EFFECT OF SILICON CONTENT ON THE STRAIN HARDENING OF DUAL-PHASE STEELS

Abstract: In the current work, the strain hardening behavior of dual-phase steels with different silicon content (0.34- 2.26 Wt. %) was examined using the modified Crussard-Jaoul analysis. It was shown that these dual-phase steels deform in two stages over a uniform strain range. Each stage exhibited a different strain hardening exponent varying with silicon content. At the first stage, work...

Strain hardening and ductility in a coarse-grain/nanostructure laminate material

Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sci...

Recovery of strain-hardening rate in Ni-Si alloys

In this study, the recovery of strain-hardening rate (RSHR) was discovered for the first time in polycrystalline materials (Ni-Si alloys) that have only dislocation activities during tensile test. Detailed microstructure characterizations show that the activation of dislocations in the secondary slip systems during tensile deformation is the major reason for this RSHR. By taking into account ot...

High Strain Rate Characterization of Advanced High Strength Steels

Secondary Hardening Behavior in Super Duplex Stainless Steels during LCF in Dynamic Strain Ageing Regime

Cyclic deformation behaviors in five modified duplex and 350°C. The influence of temperature and ni phenomenon, in the stress response curve was focuse dynamic strain ageing by increasing the first hardeni Furthermore, an increase in nitrogen concentration in ageing temperature range. The occurrence of strai structures. The formation of irreversible dislocation s hardening in the stress respons...