Distribution of the composition and micromechanical properties of Be/316L stainless steel following diffusion bonding

Citation
Pc. Zhang et al., Distribution of the composition and micromechanical properties of Be/316L stainless steel following diffusion bonding, SURF INT AN, 32(1), 2001, pp. 88-90
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE AND INTERFACE ANALYSIS
ISSN journal
0142-2421 → ACNP
Volume
32
Issue
1
Year of publication
2001
Pages
88 - 90
Database
ISI
SICI code
0142-2421(200108)32:1<88:DOTCAM>2.0.ZU;2-3
Abstract
Joining of beryllium and 316L stainless steel by hot isostatic pressing (HI P) with and without an interlayer was investigated. Metallurgical observati on, scanning Auger microscopy (SAM) and nanoindentation were performed for basic characterization of bonded joints. It is shown that the diffusion dep th of Be into 316L stainless steel is much greater than that of Cr, Ni or F e into beryllium, and it is similar to 400 mum. The nanohardness of the dif fusion zone on the beryllium side increases sharply due to intermetallic co mpounds, and the tensile strength of the Be/316L joint is < 10 MPa. For a B e/Cu/316L joint, a Cu interlayer blocks the diffusion of Fe into Be, but Ni is gathered at the Cu/316L interface and a crack is formed at this stress field. For a Be/Cu/Ni/316L joint, the diffusion depth increases further. Ch ange of composition, mechanical property with distance in diffusion zone is smooth, and the tensile strength increases to similar to 50 MPa. Copyright (C) 2001 John Wiley & Sons, Ltd.