Microstructure, Element Distribution, and Mechanical Property of Cu9Ni6Sn Alloys by Conventional Casting and Twin-Roll Casting

2020 ◽  
Author(s):  
Delin Tang ◽  
Lin Wang ◽  
Jing Li ◽  
Zhaofei Wang ◽  
Charlie Kong ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Element Distribution ◽  
Twin Roll Casting ◽  
Conventional Casting ◽  
Roll Casting ◽  
Twin Roll

scholarly journals Study on Development of Novel Mg-Based Alloys by Rapid Solidification Technology of Twin Roll Casting

2019 ◽  
Vol 804 ◽  
pp. 23-27
Author(s):  
Hai Jian Wang ◽  
Zhi Pu Pei ◽  
Dong Ying Ju
Keyword(s):  
Electron Microscope ◽  
Rapid Solidification ◽  
Amorphous Phase ◽  
Solidification Process ◽  
Element Distribution ◽  
High Concentration ◽  
Cooperative Research ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

In this study, Mg-based alloys were prepared by rapid solidification of twin roll casting (TRC), then microstructure and element distribution were investigated respectively with Scanning Electron Microscope (SEM) and Electron Probe Micro Analyzer (EPMA). What’s more, in order to analyze microstructure and crystal structure of Mg-based alloys, experiments on specimens with the usage of X-ray diffraction (XRD) and Transmission Electron Microscope (TEM) were also carried out. At last, the designed Mg-Re magnesium alloy with quasi-amorphous phase plus fine crystalline phase dual phase microstructure produced with our rapid solidification of TRC process. The rapid solidification process realized with a faster casting speed and a thinner roll gap that does not need any anther additional devices and vacuum environment. EPMA results and TEM analyses show that the quasi-amorphous phase has a high concentration in Al and RE element. There are quasi-amorphous phase in the middle of Mg-Re alloy cross section surrounded by dendrites phase and normal crystals. Acknowledgement. This work was supported by Cooperative Research and Development Center for Advanced Materials (CRDAM) funded by the Institute for Materials Research (IMR), Tohoku University (Project Number 18G0042).

scholarly journals Microstructure and Mechanical Property of Strip in Fe–23Mn–3Si–3Al TWIP Steel by Twin Roll Casting

2009 ◽  
Vol 49 (9) ◽  
pp. 1340-1346 ◽  
Author(s):  
S. H. Wang ◽  
Z. Y. Liu ◽  
W. N. Zhang ◽  
G. D. Wang ◽  
J. L. Liu ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Twip Steel ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll ◽  
Microstructure And Mechanical Property

scholarly journals Mechanism of Electromagnetic Field in the Sub-RapidSolidification of High-Strength Al-Cu-Li Alloy Produced by Twin-Roll Casting

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 952
Author(s):  
Shiju Li ◽  
Bowen Wei ◽  
Wei Yu ◽  
Chen He ◽  
Yong Li ◽  
...  
Keyword(s):  
Body Force ◽  
High Strength ◽  
Solidification Structure ◽  
Experimental Characterization ◽  
Alloy Plate ◽  
Twin Roll Casting ◽  
Comprehensive Properties ◽  
Roll Casting ◽  
Mold Casting ◽  
Twin Roll

In this work, a Al-Cu-Li alloy plate with outstanding mechanical properties was successfully prepared with electromagnetic twin-roll casting (TRC) technology. The microstructure of Al-Cu-Li alloy manufactured by conventional mold casting, TRC, and electromagnetic TRC was studied in detail. The action mechanism of electromagnetic oscillation field (EOF) in the TRC process was studied by systematic experimental characterization and numerical simulation. The results show that the EOF will enlarge the circumfluence area in the cast-rolling zone, accelerate the mass transfer and heat transfer in the molten pool, and make the solute field and flow field in the liquid cavity tend to be evenly distributed. Further, the introduction of the EOF will produce the electromagnetic body force F with the maximum strength of 14 N/m3. The F acting on the solidification front will eliminate the accumulation and deposition of Cu2+, Li+, Mg2+, Zn2+, Mn2+ at the dendrite tip and inhibit the growth of dendrites. At the same time, the F can refine the microstructure of the TRC plate, promote the formation of equiaxed crystals, improve the supersaturated solid solubility of solute elements in the a(Al) matrix, and avoid the appearance of obvious solute segregation area or the formation of excessive solute enrichment area. Therefore, the macro-segregation in TRC plate was significantly reduced, the solidification structure was dramatically refined, and the comprehensive properties of the alloy were remarkably improved.

Effect of Secondary Cooling on Non-Oriented Electrical Steel Strips Produced by Twin-Roll Casting Process

2013 ◽  
Vol 690-693 ◽  
pp. 218-221
Author(s):  
Ting Zhang ◽  
Xiao Ming Zhang ◽  
Zhi Yuan Guo ◽  
Yu Qian Wang ◽  
Cheng Gang Li
Keyword(s):  
Electrical Steel ◽  
Casting Process ◽  
Air Cooling ◽  
Secondary Cooling ◽  
Twin Roll Casting ◽  
Steel Strips ◽  
Roll Casting ◽  
Average Size ◽  
Equiaxed Grains ◽  
Twin Roll

Effect of secondary cooling on non-oriented electrical steel strips was investigated. The 2.0 mm thick cast strips contain two compositions were produced by twin-roll casting process, cooled in the air or cooled by spraying water. The microstructure was observed by optical microscopy, and EBSD was used to characterize the texture of the cast strips. The results showed that air-cooling cast strips have uniform and equiaxed grains with average size of 250 μm. The microstructure of the water-spraying cast strips compose of most equiaxed grains and a small number of abnormal big grains. At the same time, the secondary cooling rate mildly affects the cast texture strength but has no influence on the texture type.

Sign in / Sign up

Export Citation Format

Share Document