Technology and interface structure for diffusion bonding of Fe3Al/18-8 dissimilar materials

Author: Li Y.-J.   Wang J.   Yin Y.-S.   Ma H.-J.  

Publisher: Maney Publishing

ISSN: 1743-2847

Source: Materials Science and Technology, Vol.20, Iss.11, 2004-11, pp. : 1484-1488

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Abstract

The effects of technological parameters on the interface morphology and shear strength of Fe3Al/18-8 diffusion bonded joints have been researched by means of a JXA-80 scanning electron microscope (SEM) and a digital tensile press test machine. Microstructural characteristics and fracture morphology near the Fe3Al/18-8 diffusion interface, obtained under conditions of various technological parameters, have been analysed using the SEM. The test results indicate that a diffusion bonded joint with higher shear strength (στ = 226 MPa) may be obtained with a heating temperature T = 1020 – 1040°C, holding time t = 45 – 60 min and pressure P = 12 – 15 MPa.

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