pdf dynamic recrystallization and hot workability of

(PDF) Hot deformation of spray formed nickel-base

The dynamic recrystallization(DRX) is observed in the stability domain and the deformed specimens are no cracking or instabilities. However, there is no DRX in the instability domain and the alloy exhibits flow instability with cracks due to poor workability. The optimum hot working condition was determined in the stability domain.

Advances in Mechanical Engineering 2016, Vol. 8(4) 18

DMM can describe the dynamic recovery (DRV) and dynamic recrystallization (DRX) behavior in hot defor-mation on the angle of energetics. The processing maps are based on the DMM and make it possible for people to predict the workability of the material. The total power dissipated (P) in forming process can be divided into power dissipater Constitutive behavior and hot workability of multi May 13, 2020 · The hot deformation behavior of a multi-direction forged (MDFed) T2 copper was investigated by the isothermal compression test at deformation temperatures between 673 and 1173 K and strain rates between 0.001 and 10 s 1. The results reveal that the deformation characteristics of the flow stress are sensitive to the hot deformation parameters. The deformation activation energy of the

Dynamic Recrystallization of Cu-Cr-Ni-Si-Co Alloy During

Jun 24, 2021 · Hot compression deformation behavior of the Cu-0.45Cr-1.0Ni-0.28Si-0.14Co alloy was studied by a thermal-mechanical simulator at strain rates of 0.0011 s1 and deformation temperatures of 700900°C. The microstructure and texture of the copper alloy after the hot compression deformation were investigated. The results showed that the flow behavior of the Cu-Cr-Ni-Si-Co alloy was Dynamic recovery and dynamic recrystallization of NiTi influence of dynamic recovery and dynamic recrystallization on the hot workability of NiTi alloy [14,15]. In the present work, the dynamic recovery and dynamic recrystallization of NiTi SMA was systematically investigated according to the compression

Dynamic recrystallization based ductile fracture modeling

Abstract Ductile fracture is a key factor to the workability of metallic materials undergoing hot deformation. The ductility of materials at elevated temperature is closely related to dynamic recrystallization (DRX). To systematically investigate the DRX based ductile fracture, hot tensile experiments, microscopic observations and modeling of fracture behavior were conducted for 316LN Hot Deformation Behavior and Workability of In-Situ Nov 24, 2020 · materials Article Hot Deformation Behavior and Workability of In-Situ TiB2/7050Al Composites Fabricated by Powder Metallurgy Haofei Zhu 1, Jun Liu 1,*, Yi Wu 2, Qing Zhang 1, Qiwei Shi 1, Zhe Chen 1,*, Lei Wang 1, Fengguo Zhang 2 and Haowei Wang 1 1 State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China;

Hot Deformation and Dynamic Recrystallization Behavior

Dislocation generation and multiplication are the main hot deformation mechanisms for the alloy. The deformation temperature increaseand the strain rate decrease can promotedynamic recrystallization of the alloy. Keywords Cu-Cr-Zr-Y alloy, dynamic recrystallization, hot deformation, metals and alloys, microstructure 1. Introduction Hot Workability of Ultrafine-Grained Aluminum Alloy Al6063 powder was subjected to severe plastic deformation via high-energy mechanical milling to prepare ultrafine-grained (UFG) aluminium alloy. Uniaxial compression test at various temperatures between 300 and 450 °C and strain rates between 0.01 and 1 s-1 was carried out to evaluate hot workability of the material. Microstructural studies were performed by EBSD and TEM.

Hot workability and constitutive model of the Cu-Zr-Nd

dynamic recrystallization (DRX). The ow curves reach to a peak value rst, and then decrease until a relatively steady constant value is achieved in the end. This can be seen at the deformation temperatures of 850 C and 900 CinFig.1. 3.2. Microstructure evolution 3.2.1. Hot workability and optical micrographs of the Cu-Zr-Nd alloy Hot workability and dynamic recrystallization of AA6015 Download PDF:Sorry, we are unable to provide the full text but you may find it at the following location(s):http://hdl.handle.net/11566/43 (external link)

Influence of Segregation on Microstructure and Hot

Jun 04, 2020 · The hot deformation process of maraging steel takes mostly place in the austenite region in which dynamic recrystallization may occur. During the dynamic recrystallization process, the microstructure is refined by nucleation of austenite, and the process instability can be suppressed before the martensitic transformation [ 11 , 12 ]. On the Optimisation of Hot Workability in Austenitic May 12, 2008 · Venugopal, S, & Mannan, SL. "On the Optimisation of Hot Workability in Austenitic Stainless Steels Using Dynamic Material Model and a Novel Methodology for the Control of Microstructure During Hot Working." Proceedings of the ASME 2003 International Mechanical Engineering Congress and Exposition. Materials. Washington, DC, USA.

Positive influence of hydrogen on the hot workability and

Feb 22, 2016 · Download PDF Download. Materials Science and Engineering:A. Volume 656, 22 February 2016, Pages 151-164. Positive influence of hydrogen on the hot workability and dynamic recrystallization of a -TiAl based alloy. Author links open overlay panel D.S. Wen a Y.Y. Zong a b Y.Q. Wang c Z.Y. Liu a D.B. Shan a b. Show more. Share. Superplastic Deformation and Dynamic Recrystallization Nov 07, 2019 · dynamic recrystallization (DRX) nucleation mechanisms were proposed. The dominant nucleation mechanism of dynamic recrystallization (DRX) is the bulging of original grain boundaries, which is precipitation is close to the limit of hot workability of C&W superalloys. Although the GH4151 alloy exhibits good application prospect due to the

The effect of 14H LPSO phase on dynamic recrystallization

Apr 02, 2014 · The effects of stacking sequence changes of the close-packed plane in a long period stacking ordered (LPSO) phase on the hot deformation behavior, dynamic recrystallization (DRX) evolution and hot workability of Mg2.0Zn0.3Zr5.8Y alloy were investigated by compression test.Dynamic Recrystallization and the Hot Working of Dynamic Recrystallization and the Hot Working of Precious Metal Alloys Paolo Battaini 8853 S.p.A. Pero (Milan), Italy Introduction Although the process of metal hot working is lost in the mists of time, a satisfactory understanding of it was finally achieved during the last 40 years. Fundamental