Equal Channel Angular Extrusion Simulation of High-Nb Containing β-γ TiAl Alloys
TiAl alloys containing high Nb are significantly promising for high-temperature structural applications in aerospace and automotive industries. Unfortunately the low plasticity at room temperature limits their extensive applications. To improve the plasticity, not only optimizing the opposition, but...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/285170 |
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| author | Lai-qi Zhang Xiang-ling Ma Geng-wu Ge Yong-ming Hou Jun-zi Zheng Jun-pin Lin |
| author_facet | Lai-qi Zhang Xiang-ling Ma Geng-wu Ge Yong-ming Hou Jun-zi Zheng Jun-pin Lin |
| author_sort | Lai-qi Zhang |
| collection | DOAJ |
| description | TiAl alloys containing high Nb are significantly promising for high-temperature structural applications in aerospace and automotive industries. Unfortunately the low plasticity at room temperature limits their extensive applications. To improve the plasticity, not only optimizing the opposition, but also refining grain size through equal channel angular extrusion (ECAE) is necessary. The equal channel angular extrusion simulation of Ti-44Al-8Nb-(Cr,Mn,B,Y)(at%) alloy was investigated by using the Deform-3D software. The influences of friction coefficient, extrusion velocity, and different channel angles on effective strain, damage factor, and the load on the die were analyzed. The results indicate that, with the increasing of friction coefficient, effective strain is enhanced. The extrusion velocity has little effect on the uniformity of effective strain; in contrast it has large influence on the damage factor. Thus smaller extrusion rate is more appropriate. Under the condition of different channel angles, the larger one results in the lower effective strain magnitude and better strain distribution uniformity. |
| format | Article |
| id | doaj-art-3608aa47224144fd8d7148f9333d3ee2 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-3608aa47224144fd8d7148f9333d3ee22025-02-03T01:20:14ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/285170285170Equal Channel Angular Extrusion Simulation of High-Nb Containing β-γ TiAl AlloysLai-qi Zhang0Xiang-ling Ma1Geng-wu Ge2Yong-ming Hou3Jun-zi Zheng4Jun-pin Lin5State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaTiAl alloys containing high Nb are significantly promising for high-temperature structural applications in aerospace and automotive industries. Unfortunately the low plasticity at room temperature limits their extensive applications. To improve the plasticity, not only optimizing the opposition, but also refining grain size through equal channel angular extrusion (ECAE) is necessary. The equal channel angular extrusion simulation of Ti-44Al-8Nb-(Cr,Mn,B,Y)(at%) alloy was investigated by using the Deform-3D software. The influences of friction coefficient, extrusion velocity, and different channel angles on effective strain, damage factor, and the load on the die were analyzed. The results indicate that, with the increasing of friction coefficient, effective strain is enhanced. The extrusion velocity has little effect on the uniformity of effective strain; in contrast it has large influence on the damage factor. Thus smaller extrusion rate is more appropriate. Under the condition of different channel angles, the larger one results in the lower effective strain magnitude and better strain distribution uniformity.http://dx.doi.org/10.1155/2015/285170 |
| spellingShingle | Lai-qi Zhang Xiang-ling Ma Geng-wu Ge Yong-ming Hou Jun-zi Zheng Jun-pin Lin Equal Channel Angular Extrusion Simulation of High-Nb Containing β-γ TiAl Alloys Advances in Materials Science and Engineering |
| title | Equal Channel Angular Extrusion Simulation of High-Nb Containing β-γ TiAl Alloys |
| title_full | Equal Channel Angular Extrusion Simulation of High-Nb Containing β-γ TiAl Alloys |
| title_fullStr | Equal Channel Angular Extrusion Simulation of High-Nb Containing β-γ TiAl Alloys |
| title_full_unstemmed | Equal Channel Angular Extrusion Simulation of High-Nb Containing β-γ TiAl Alloys |
| title_short | Equal Channel Angular Extrusion Simulation of High-Nb Containing β-γ TiAl Alloys |
| title_sort | equal channel angular extrusion simulation of high nb containing β γ tial alloys |
| url | http://dx.doi.org/10.1155/2015/285170 |
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