Control of interfacial mechanical properties in Ti/Al2O3 composites

Hsin Fu Wang; William W. Gerberich; Jim E. Angelo; Mike J. Mills

Control of interfacial mechanical properties in Ti/Al₂O₃ composites

Hsin Fu Wang, William W. Gerberich, Jim E. Angelo, Mike J. Mills

Chemical Engineering and Materials Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The fracture energy of ti/Al₂O₃ composite interfaces has been determined by four point bending tests of sandwich specimens for different thicknesses of metal interlayers at 900°C. The interfacial fracture was found to be brittle. An intermetallic reaction product (Ti₃Al) was produced at the interface after the diffusion bonding process. When the metal interlayer is thicker, there is more plastic energy dissipation in the metal during the fracture process. Therefore, the interfacial fracture energy increases. This can be seen from the fact that there is a larger plastic zone size with increasing thickness of the metal interlayer. The measured interfacial fracture energy TI/Al₂O₃ ranges form 9.6 J/m² to 45.1 J/m². The intrinsic interfacial fracture energy is obtained to be 0.26 J/m². The embrittlement of the interface after the diffusion bonding process causes this value to be smaller than work of adhesion for Ti/Al₂O₃ (2.0 J/m²).

Original language	English (US)
Title of host publication	Interface Control of Electrical, Chemical, and Mechanical Properties
Editors	Peter Borgesen, Klavs F. Jensen, Roger A. Pollak
Publisher	Publ by Materials Research Society
Pages	375-380
Number of pages	6
ISBN (Print)	1558992170
State	Published - 1994
Event	Proceedings of the Fall 1993 MRS Meeting - Boston, MA, USA Duration: Nov 29 1993 → Dec 3 1993

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	318
ISSN (Print)	0272-9172

Other

Other	Proceedings of the Fall 1993 MRS Meeting
City	Boston, MA, USA
Period	11/29/93 → 12/3/93

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Cite this

Wang, H. F., Gerberich, W. W., Angelo, J. E., & Mills, M. J. (1994). Control of interfacial mechanical properties in Ti/Al₂O₃ composites. In P. Borgesen, K. F. Jensen, & R. A. Pollak (Eds.), Interface Control of Electrical, Chemical, and Mechanical Properties (pp. 375-380). (Materials Research Society Symposium Proceedings; Vol. 318). Publ by Materials Research Society.

Control of interfacial mechanical properties in Ti/Al₂O₃ composites. / Wang, Hsin Fu; Gerberich, William W.; Angelo, Jim E. et al.
Interface Control of Electrical, Chemical, and Mechanical Properties. ed. / Peter Borgesen; Klavs F. Jensen; Roger A. Pollak. Publ by Materials Research Society, 1994. p. 375-380 (Materials Research Society Symposium Proceedings; Vol. 318).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Wang, HF, Gerberich, WW, Angelo, JE & Mills, MJ 1994, Control of interfacial mechanical properties in Ti/Al₂O₃ composites. in P Borgesen, KF Jensen & RA Pollak (eds), Interface Control of Electrical, Chemical, and Mechanical Properties. Materials Research Society Symposium Proceedings, vol. 318, Publ by Materials Research Society, pp. 375-380, Proceedings of the Fall 1993 MRS Meeting, Boston, MA, USA, 11/29/93.

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abstract = "The fracture energy of ti/Al2O3 composite interfaces has been determined by four point bending tests of sandwich specimens for different thicknesses of metal interlayers at 900°C. The interfacial fracture was found to be brittle. An intermetallic reaction product (Ti3Al) was produced at the interface after the diffusion bonding process. When the metal interlayer is thicker, there is more plastic energy dissipation in the metal during the fracture process. Therefore, the interfacial fracture energy increases. This can be seen from the fact that there is a larger plastic zone size with increasing thickness of the metal interlayer. The measured interfacial fracture energy TI/Al2O3 ranges form 9.6 J/m2 to 45.1 J/m2. The intrinsic interfacial fracture energy is obtained to be 0.26 J/m2. The embrittlement of the interface after the diffusion bonding process causes this value to be smaller than work of adhesion for Ti/Al2O3 (2.0 J/m2).",

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N2 - The fracture energy of ti/Al2O3 composite interfaces has been determined by four point bending tests of sandwich specimens for different thicknesses of metal interlayers at 900°C. The interfacial fracture was found to be brittle. An intermetallic reaction product (Ti3Al) was produced at the interface after the diffusion bonding process. When the metal interlayer is thicker, there is more plastic energy dissipation in the metal during the fracture process. Therefore, the interfacial fracture energy increases. This can be seen from the fact that there is a larger plastic zone size with increasing thickness of the metal interlayer. The measured interfacial fracture energy TI/Al2O3 ranges form 9.6 J/m2 to 45.1 J/m2. The intrinsic interfacial fracture energy is obtained to be 0.26 J/m2. The embrittlement of the interface after the diffusion bonding process causes this value to be smaller than work of adhesion for Ti/Al2O3 (2.0 J/m2).

AB - The fracture energy of ti/Al2O3 composite interfaces has been determined by four point bending tests of sandwich specimens for different thicknesses of metal interlayers at 900°C. The interfacial fracture was found to be brittle. An intermetallic reaction product (Ti3Al) was produced at the interface after the diffusion bonding process. When the metal interlayer is thicker, there is more plastic energy dissipation in the metal during the fracture process. Therefore, the interfacial fracture energy increases. This can be seen from the fact that there is a larger plastic zone size with increasing thickness of the metal interlayer. The measured interfacial fracture energy TI/Al2O3 ranges form 9.6 J/m2 to 45.1 J/m2. The intrinsic interfacial fracture energy is obtained to be 0.26 J/m2. The embrittlement of the interface after the diffusion bonding process causes this value to be smaller than work of adhesion for Ti/Al2O3 (2.0 J/m2).

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