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Crack propagation behavior of in-situ structural gradient Ni/Ni-aluminide//Ti/Ti-aluminide laminate materials  

Chung, D.S. (Department of Materials, Daegu Polytechnic College)
Kim, J.K. (School of Materials Engineering, Miryang National University)
Cho, H. (School of Materials Engineering, Miryang National University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.15, no.6, 2005 , pp. 269-275 More about this Journal
Abstract
Ni/Ni-aluminide/Ti/Ti-aluminide laminate composite, considered as a functionally gradient material, was manufactured by thin foil hot press technique. Thick intermetallic layers of NiAl and $TiAl_3$ were formed by a self-propagating high-temperature synthesis (SHS) reaction, and thin continuous taters of $Ni_3Al$ and TiAl were formed by a solid-state diffusion. Fracture resistance with loading along the crack arrester direction is higher than crack divider direction due to the interruption of crack growth in metal layers. The $Ni_3Al$ and NiAl intermetallic layer showed cleavage and intergranular fracture behavior, respectively, while the fracture mode of $TiAl_3$ layer was found to be an intragranular cleavage. The debonding between metal and intermetallic layer and the pores were observed in the Ni/Ni-aluminide layers, resulting in the lower fracture resistance. With the results of acoustic emission (AE) source characterization the real time of failure and the effect of AE to crack growth could be monitored.
Keywords
Layered materials; Intermetallic matrix composite; Ni-aluminide; Ti-aluminide; Self-propagating high-temperature synthesis; Thin foil hot press process;
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  • Reference
1 D.E. Alman, J.C. Rawers and J.A. Hawk, 'Microstructural and failure characteristics of metal-intermetallic layered sheet composites', Metall. Mater. Trans. A 26 (1995) 589
2 D.-S. Chung, M. Enoki, H. Mori and T. Kishi, 'Microstructural analysis and mechanical properties of in-situ Nb/Nb-aluminide laminate materials', Sci. Tech. Adv. Mater. 3 (2002) 129
3 H.Y. Kim, D.S. Chung and S.H. Hong, 'Reaction synthesis and microstructure of NiAl/Ni micro-laminated composites', Mater. Sci. Eng. A 396 (2005) 376
4 D.S. Chung, J.K. Kim and M. Enoki, 'In-situ fabrication and fracture characteristics of structural gradient Ni/Ni-aluminide//Ti/Ti-aluminide layered materials', Mater. Sci. Forum 475-479 (2005) 1521
5 D.S. Chung, Y. Tomita, M. Enoki and T. Kishi, 'Formation behavior of aluminide layers during the fabrication of Nb/Nb-aluminide laminate materials from Nb and Al foil', J. Jpn. Inst. Metals 63 (1999) 1043
6 T.S. Srivatsan, M. Strangwood and W.O. Soboyejo, 'The tensile behaviour of gamma titanium aluminide intermetallic', J. Mater. Sci. 31 (1996) 2193   DOI
7 R.L. Fleisher, D.M. Dimiduk and H.L. Lipsitt, 'Intermetallic compounds for strong high-temperature materials: status and potential', Annual Review of Materials Science 19 (1989) 231
8 F.J.J. van Loo and G.D. Rieck, 'Diffusion in the titanium-aluminium system-I. interdiffusion between solid Al and Ti or Ti-Al alloys', Acta Metall. 21 (1973) 61
9 T. Kishi, 'Acoustic emission source characterization and its application to micro-cracking', Z. Metallkde. 76 (1985) 512
10 H.E. Maupin and J.C. Rawers, 'Metal-intermetallic composites formed by reaction-sintering elemental powders', J. Mater. Sci. Lett. 12 (1993) 540
11 K. Sakai, 'Study on the mechanics properties in Ni/Ni-aluminide composite materials', PhD. Thesis, The University of Tokyo (1996)
12 J.W. Patten, 'Nickel aluminide for diesel engines', in High Temperature Aluminide and Intermetallics, ed. S.H. Whang, et at. (Proceedings Symposium TMS and AMS, Indianapolis, IN, 1989) 493
13 M. Enoki and T. Kishi, 'Theory and analysis of deformation moment tensor due to microcracking', International J. Fracture 38 (1988) 295
14 Y.D. Jang, D.B. Lee and D.Y. Seo, 'High temperature oxidation of thermomechanically ttreated Ti-47Al-2Cr-2Nb', Met. Mater.-Int. 8 (2002) 503
15 D.L. Anton, D.M. Shah, D.N. Duhl and A.F. Giamei, 'Selecting high-temperature structural intermetallic compounds: the engineering approach', J. Metals 41 (1989A) 12
16 D.E. Alman and C.P. Dogan, 'Intermetallic sheets synthesized from elemental Ti, Al, and Nb foils', Mater. Trans. A 26 (1995) 2759   DOI   ScienceOn
17 M. Enoki, A. Ohta, D.S. Chung, M. Watanabe and T. Kishi, 'Crack propagation behavior of Ti/Ti-Al layered materials', J. Jpn. Inst. Metals 64 (2000) 1076
18 Y.W. Kim, 'Intermetallic alloys based on gamma titanium aluminides', J. Metals 41 (1989) 24