Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy
Tensile tests were carried out on amorphous Al88Ni4Y8 ribbons at room and high temperatures. The fracture strength at room temperature was 889 MPa, with an elastic strain of ∼1.35%. At 200 °C the tensile strength was 816 MPa, with a total strain of 16.8%. Modulated differential scanning calorimeter...
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sg-ntu-dr.10356-852722020-06-01T10:26:31Z Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy Yang, H. W. Tan, M. J. Ramanujan, Raju V. School of Materials Science & Engineering School of Mechanical and Aerospace Engineering Tensile tests were carried out on amorphous Al88Ni4Y8 ribbons at room and high temperatures. The fracture strength at room temperature was 889 MPa, with an elastic strain of ∼1.35%. At 200 °C the tensile strength was 816 MPa, with a total strain of 16.8%. Modulated differential scanning calorimeter results revealed the existence of a “hidden” glass transition, which resulted in viscous flow and large plastic deformation. Dynamic crystallization during tensile tests accounted for the observed strain hardening behavior. 2013-06-17T02:19:37Z 2019-12-06T16:00:43Z 2013-06-17T02:19:37Z 2019-12-06T16:00:43Z 2011 2011 Journal Article Yang, H. W., Tan, M. J., & Ramanujan, R. V. (2012). Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy. Scripta Materialia, 66(6), 382-385. 1359-6462 https://hdl.handle.net/10356/85272 http://hdl.handle.net/10220/10407 10.1016/j.scriptamat.2011.11.038 en Scripta materialia © 2011 Acta Materialia Inc. |
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Tensile tests were carried out on amorphous Al88Ni4Y8 ribbons at room and high temperatures. The fracture strength at room temperature was 889 MPa, with an elastic strain of ∼1.35%. At 200 °C the tensile strength was 816 MPa, with a total strain of 16.8%. Modulated differential scanning calorimeter results revealed the existence of a “hidden” glass transition, which resulted in viscous flow and large plastic deformation. Dynamic crystallization during tensile tests accounted for the observed strain hardening behavior. |
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School of Materials Science & Engineering |
| author_facet |
School of Materials Science & Engineering Yang, H. W. Tan, M. J. Ramanujan, Raju V. |
| format |
Article |
| author |
Yang, H. W. Tan, M. J. Ramanujan, Raju V. |
| spellingShingle |
Yang, H. W. Tan, M. J. Ramanujan, Raju V. Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy |
| author_sort |
Yang, H. W. |
| title |
Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy |
| title_short |
Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy |
| title_full |
Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy |
| title_fullStr |
Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy |
| title_full_unstemmed |
Strain hardening at elevated temperatures induced by dynamic crystallization of an Al88Ni4Y8 amorphous alloy |
| title_sort |
strain hardening at elevated temperatures induced by dynamic crystallization of an al88ni4y8 amorphous alloy |
| publishDate |
2013 |
| url |
https://hdl.handle.net/10356/85272 http://hdl.handle.net/10220/10407 |
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1681059055758475264 |