Numerical modelling and experimental investigation of diffusion brazing SS304/BNi-2/SS304 joint

被引：15

作者：

Chen, H. ^{[1
]}

Gong, J-M. ^{[1
]}

Tu, S-T. ^{[1
]}

机构：

[1] Nanjing Univ Technol, Coll Mech & Power Engn, Nanjing 210009, Peoples R China

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2009年 / 14卷 / 01期

关键词：

Diffusion brazing; Diffusion coefficient; Isothermal solidification; BNi-2; 304 Stainless steel; PHASE BONDING PROCESS; FILLER METALS; TRANSIENT; TEMPERATURE; BEHAVIOR;

D O I：

10.1179/136217108X357583

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The kinetics of dissolution and isothermal solidification at the bonding temperature during diffusion brazing SS304/BNi-2/SS304 has been studied through a combination of analytical modelling and experimental investigations. The modelling is based on the diffusion theory and the consideration of transient motion of liquid/solid interface. A set of coupled finite differential equations has been programmed to track the motion of liquid/solid interface during the isothermal solidification of liquid filler. Four parameters can be mathematically determined from the analytical modelling including the evolution of solute concentration profile, the maximum diffusion distance, and the maximum liquid thickness as well as the time to complete the isothermal solidification. These analyses are helpful to understanding the joining mechanism during diffusion brazing. The temperature dependent diffusion coefficient used in the modelling is derived together with the experimental data from brazing the wedge shaped joint specimen of SS304/BNi-2/SS304. The effects of bonding temperature and initial joint thickness on the joining process have also been investigated.

引用

页码：32 / 41

页数：10

共 16 条

[1] Transient liquid phase bonding of Inconel 718 and Inconel 625 with BNi-2: Modeling and experimental investigations [J].

Arafin, M. A. ;

Medraj, M. ;

Turner, D. P. ;

Bocher, P. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 447 (1-2) :125-133

[2]

CHEN JM, 2000, J U PETROLEUM, V24, P80

[3]

Crank J., 1984, FREE MOVING BOUNDARY, P101

[4] Effect of bonding temperature on isothermal solidification rate during transient liquid phase bonding of Inconel 738LC superalloy [J].

Idowu, OA ;

Richards, NL ;

Chaturvedi, MC .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 397 (1-2) :98-112

[5] Numerical modelling of transient liquid phase bonding and other diffusion controlled phase changes [J].

Illingworth, TC ;

Golosnoy, IO ;

Gergely, V ;

Clyne, TW .

JOURNAL OF MATERIALS SCIENCE, 2005, 40 (9-10) :2505-2511

[6] Numerical solutions of diffusion-controlled moving boundary problems which conserve solute [J].

Illingworth, TC ;

Golosnoy, IO .

JOURNAL OF COMPUTATIONAL PHYSICS, 2005, 209 (01) :207-225

[7] High temperature strength and inelastic behavior of plate-fin structures for HTGR [J].

Kawashima, F. ;

Igari, T. ;

Miyoshi, Y. ;

Kamito, Y. ;

Tanihira, M. .

NUCLEAR ENGINEERING AND DESIGN, 2007, 237 (06) :591-599

[8]

Leone EA., 2006, WELD WORLD, V50, P3, DOI [10.1007/BF03266509, DOI 10.1007/BF03266509]

[9]

MACDONALD WD, 1992, ANNU REV MATER SCI, V22, P23

[10]

MASSALSKI TB, 1996, BINARY ALLOY PHASE D

← 1 2 →