Microstructure evolution of undercooled Fe–Co–Cu alloys

2011 ◽  
Vol 406 (4) ◽  
pp. 957-962 ◽  
Author(s):  
N. Liu ◽  
G.C. Yang ◽  
W. Yang ◽  
F. Liu ◽  
C.L. Yang ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Cu Alloys

In situobservation of nucleation, fragmentation and microstructure evolution in Sn–Bi and Al–Cu alloys

2008 ◽  
Vol 21 (1-4) ◽  
pp. 125-128 ◽  
Author(s):  
H. Yasuda ◽  
Y. Yamamoto ◽  
N. Nakatsuka ◽  
T. Nagira ◽  
M. Yoshiya ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Cu Alloys

Microstructure Evolution during Thermal Aging of Fe-Cu Alloys

2012 ◽  
Vol 488-489 ◽  
pp. 164-168
Author(s):  
Jiu Zhou Zhao ◽  
Qing Liang Wang
Keyword(s):  
Microstructure Evolution ◽  
Thermal Aging ◽  
Late Stage ◽  
Aging Process ◽  
Great Increase ◽  
Cube Root ◽  
Cu Alloys ◽  
The Matrix ◽  
The Mean ◽  
Almost All

Aging of Fe-Cu alloys or steels containing copper may result in the formation of the dispersion of nanometric precipitates in the matrix and, thus, causes a great increase in the strength of the alloys. A model is developed describing the aging process of Fe-Cu alloys. The model is first satisfactorily verified by comparing with the reported experimental results, and then applied to calculate the microstructure evolution during aging a Cu-Fe alloy. The numerical results demonstrate that the nucleation of the precipitates occurs after a period of incubation. Since that time on the microstructure evolution is the result of the concurrent action of nucleation, growth/shrinkage and structural transformation of the precipitates. In the late stage of aging almost all the precipitates are of 9R structure. The mean particle radius varies linearly with the cube root of time

Microstructure evolution of cast Al-Si-Cu alloys in solution treatment

2008 ◽  
Vol 23 (2) ◽  
pp. 184-188 ◽  
Author(s):  
Dingfei Zhang ◽  
Jian Peng ◽  
Guangjie Huang ◽  
Dingding Zeng
Keyword(s):  
Microstructure Evolution ◽  
Solution Treatment ◽  
Cu Alloys

Influence of Fe-rich particles on microstructure evolution, texture and mechanical properties of Al–Mg–Si–Cu alloys

2020 ◽  
Vol 117 (5) ◽  
pp. 508
Author(s):  
Libo Yu ◽  
Lin Chen ◽  
Hebin Wang ◽  
Xiaofeng Wang ◽  
Wenfei Peng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Microstructure Evolution ◽  
Fine Particle ◽  
Particle Distribution ◽  
Solution Treatment ◽  
Alloy Sheet ◽  
Grain Structure ◽  
Cu Alloys ◽  
Solution Treated ◽  
Equiaxed Grain

The influence of Fe-rich particles on the microstructure evolution, texture and mechanical properties of Al–Mg–Si–Cu alloys was investigated by means of microstructure, texture and mechanical property analysis in the present study. The results show that Fe-rich particles have a significant influence on the microstructure evolution, texture, and final mechanical properties. Although both alloy sheets with different numbers of Fe-rich particles possess the similar microstructure including grain structure and fine particle distribution before solution treatment, the alloy sheet with a large number of Fe-rich particles possesses finer equiaxed grain structure in comparison with the alloy sheet with a medium number of Fe-rich particles after solution treatment. The solution treated alloy sheet with a medium number of Fe-rich particles is mainly comprised of CubeND {001}<310> orientation, while the solution treated alloy sheet with a large number of Fe-rich particles possesses weaker texture consisting of CubeND and Goss {110}<001> orientations. Fe-rich particles are beneficial to improve yield strength, ultimate tensile strength and r value, whereas reduce n and Δr values. Finally, the effect of Fe-rich particles on recrystallization microstructure and texture was analyzed.

Microstructure evolution and mechanical properties of Al–Cu alloys inoculated by FeBSi metallic glass

2015 ◽  
Vol 67 ◽  
pp. 130-135 ◽  
Author(s):  
Zhihao Bai ◽  
Feng Qiu ◽  
Jiaxuan Chi ◽  
Tao Zhang ◽  
Qichuan Jiang
Keyword(s):  
Mechanical Properties ◽  
Metallic Glass ◽  
Microstructure Evolution ◽  
Cu Alloys

Microstructure Evolution of Directionally Solidified Al-Cu Alloys

2010 ◽  
Vol 146-147 ◽  
pp. 729-733
Author(s):  
Min Qu ◽  
Lin Liu ◽  
Ming Zhao ◽  
Feng Bin Liu ◽  
Guang Ping He
Keyword(s):  
Temperature Gradient ◽  
Microstructure Evolution ◽  
Alloy Composition ◽  
Directionally Solidified ◽  
Cu Alloy ◽  
Cu Alloys ◽  
Higher Temperature ◽  
Mixed Microstructure ◽  
Dilute Alloy ◽  
Peculiar Phenomenon

The microstructure evolution of Al-Cu alloys with different compositions is investigated in directional solidification. Two distinctly different microstructure evolution mechanisms are obtained in Al-0.85%Cu and Al-4%Cu systems, respectively. In Al-0.85%Cu alloy, it shows a peculiar phenomenon, the microstructure evolution is always cells and no dendrites are obtained. In other words, the cells undergo several transitions as the pulling velocity increasing from 15μm/s to 300μm/s, they follow the sequences: mixed microstructure of pox and banded cells →mixed microstructure of polygonal and banded cells →banded cells →elongated cells. Particularly, it is studied what caused the dendrites not appear in Al-0.85%Cu system. Finally, it comes to the conclusion that there are two aspects which lead to the phenomenon: a dilute alloy composition and a relatively higher temperature gradient.

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