Static Recrystallization of Cold Rolled Intermetallic Fe17Al4Cr0.3Zr Alloy

2012 ◽  
Vol 21 (9) ◽  
pp. 1932-1936 ◽  
Author(s):  
P. Kratochvíl ◽  
I. Schindler ◽  
P. Hanus ◽  
R. Král ◽  
P. Harcuba
1997 ◽  
Vol 28 (3-4) ◽  
pp. 211-218 ◽  
Author(s):  
V. Marx ◽  
D. Raabe ◽  
O. Engler ◽  
G. Gottstein

In this study both primary static recrystallization and static recovery of cold rolled bcc and fcc metals and alloys are numerically simulated using a three-dimensional model that is based on a modified cellular automaton approach. The model considers the influence of the initial deformation texture and microstructure on both static recovery and primary static recrystallization with a high spatial resolution. The cellular automat technique provides both local and statistical information about the kinetics, the morphology and the texture change during annealing. The influence of nucleation and growth can be studied in detail. The simulations are compared to experimental results obtained on fcc and bcc polycrystals.


2021 ◽  
Vol 1016 ◽  
pp. 1636-1641
Author(s):  
Xiao Dong Wu ◽  
Xiao Li Liu ◽  
Ling Fei Cao ◽  
Guang Jie Huang

The aim of this work was to analyze the recrystallization behavior of cold rolled Aluminum/graphene composites during annealing. The Aluminum/graphene composite was cold rolled firstly, and then annealed at different temperature (250°C, 300°C, 350°C, 400°C) and for various time (1 h, 2 h, 8 h, 32 h). Full recrystallization did not occur until the annealing temperature was above 300 °C. With annealing temperature increasing from 250 to 300°C, the hardness of the composites decreased from 49.6 to 27.6 HV. Grain growth were not observed at high annealing temperature and longer annealing time, which suggested that Graphene has strong pinning effect on the grain boundary of Aluminum.


2011 ◽  
Vol 702-703 ◽  
pp. 651-654
Author(s):  
Sang Bong Yi ◽  
Lilian Rayas ◽  
Stefanie Sandlöbes ◽  
Stefan Zaefferer ◽  
Dietmar Letzig ◽  
...  

The role of rare earth addition on the microstructure and texture during recrystallization of cold rolled sheets is investigated by a comparative study of pure Mg, Mg-3Y and Mg1.5Nd sheets. In pure Mg, nucleation occurs mainly at shear bands which results in a texture weakening. The basal-type texture re-strengthens rapidly during grain growth of the pure Mg sheet. In contrast, in the Mg-RE alloys the weaker texture formed during early recrystallization strage is retained during further annealing due to retarded grain growth. Uni-axial tensile and Erichsen tests show that ductility and sheet formability are significantly improved by addition of rare earth elements.


2016 ◽  
Vol 105 ◽  
pp. 479-494 ◽  
Author(s):  
Z.R. Zeng ◽  
Y.M. Zhu ◽  
S.W. Xu ◽  
M.Z. Bian ◽  
C.H.J. Davies ◽  
...  

10.30544/231 ◽  
2016 ◽  
Vol 22 (4) ◽  
pp. 221-236
Author(s):  
Padina Ajami Ghaleh Rashidi ◽  
Hossein Arabi ◽  
Seyed Mehdi Abbasi

In this research, the effect of cold rolling, annealing time and temperature on microstructure and hardness were studied in L-605 superalloy. A cast bar of L-605 alloy was hot rolled at 1200ºC. As the following, it was solutionized at 1230 ºC for 1 hour and finally was cold rolled by different amounts (i.e. 5-35 percent thickness reduction). The cold-rolled samples were heat treated for different times (i.e. 2-120 min.) at temperature range of 1068-1230 ºC in order to study their recrystallization behavior. The results of microstructural analysis indicated that static recrystallization is responsible for microstructural refinement and coarsening, so that an increase in the amounts of cold rolling resulted in a fully recrystallized microstructure at lower temperature. This analysis also indicated that annealing temperature is more effective than annealing time in grain growth. Microstructural evaluation as well as showed that carbides such as M7C3 and M23C6 which have been reported in some literature were not observed during rolling or annealing in this research. It is perhaps due to usage of high annealing temperatures or possibly due to their very low contents which was not possible for us to evaluate their formation with conventional methods. Hardness results revealed that higher annealing temperature lead to lower hardness values as expected.


2017 ◽  
Vol 136 ◽  
pp. 41-45 ◽  
Author(s):  
Young Min Kim ◽  
Chamini Mendis ◽  
Taisuke Sasaki ◽  
Dietmar Letzig ◽  
Florian Pyczak ◽  
...  

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