Fractographic analysis of vitreous calcia-alumina eutectic fibres produced by inviscid melt spinning (IMS) |
| |
Authors: | Yun -Mo Sung Il -Mo Sung |
| |
Affiliation: | (1) Department of Materials Science and Engineering, University of Wisconsin-Madison, 53706 Madison, WI, USA;(2) Propeller Shaft Division, Deok Chang Ind. Co. Ltd., Incheon, Korea;(3) Present address: Department of Materials Science and Engineering, Daejin University, Pochun-kun, 487-800 Kyungki-do, Korea |
| |
Abstract: | The mechanical properties of inviscid melt spun (IMS) CaO-Al2O3 (46.5 wt % CaO-53.5 wt % Al2O3) eutectic fibres were examined by fractographic analysis as well as four-point bending and micro-indentation. The averaged fracture strength and elastic modulus values of the IMS Calcia-Alumina (CA) fibre were determined to be 460 MPa and 99.8 GPa, respectively by using four-point bending tests. The inner mirror constant (M) was determined to be 2.39 MPa·m1/2 by using the plot of the fracture strength ( f) obtained from the bending tests as a function of r
–1/2, where r is the inner mirror radius measured from scanning electron microscopy (SEM) on the fractured CA fibres. The flaw-to-mirror ratio (c/r) for the CA fibre was calculated to be 1 11.24. Also, the critical flaw size (c) of the CA fibre was estimated to be 2.35 m. The averaged elastic modulus value from Knoop micro-indentation was determined to be 102.5 GPa which is in good agreement with that from the four-point bending tests. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|