Solid State Diffusion Welding by Superplastic Coordinate Deformation between Vacuum Spray Fusing Alloy G111WC and Steel Substrate

2007 ◽  
Vol 551-552 ◽  
pp. 399-403 ◽  
Author(s):  
Yao Zong Zhang ◽  
Jian Bo Huang ◽  
H.P. Wang ◽  
X. Lin
Keyword(s):  
Solid State ◽  
Solid Phase ◽  
Steel Substrate ◽  
Strain Ratio ◽  
Alloy Layer ◽  
Diffusion Welding ◽  
Solid State Diffusion ◽  
State Diffusion ◽  
Superplastic State ◽  
Is Strain

This paper discusses the issues about the incorruptibility of industrial dies, mainly researches the G111WC and G112WC mixed alloy layer sprays fusing on the surface of industrial dies under the vacuum condition and the solid phase welding-on mechanism of the mixed alloy layer under superplastic state. It points out that when W≈1 ( W is strain ratio of coating and substrate ) and within the range of the generatrix’s superplasticity, the layer and the generatrix will realize the solid state diffusion joining by superplastic coordinate deformation, which leads to an effective welding.

Solid state diffusion welding by superplastic coordinate deformation between NiFeCrBSi(G112WC) and 3Cr2W8VA

1997 ◽  
Vol 42 (7) ◽  
pp. 605-608 ◽  
Author(s):  
Yaozong Zhang ◽  
Yanxiang Li ◽  
Fuxiao Chen ◽  
Jinliang Huang
Keyword(s):  
Solid State ◽  
Diffusion Welding ◽  
Solid State Diffusion ◽  
State Diffusion

Solide State Diffusion Bonding of Al6061-SiC Nanocomposites

2021 ◽  
Vol 18 (4) ◽  
pp. 9305-9311
Author(s):  
W. Melik ◽  
Z. Boumerzoug ◽  
F. Delaunois
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Solid State ◽  
Diffusion Bonding ◽  
Welded Joint ◽  
Diffusion Welding ◽  
Solid State Diffusion ◽  
X Ray Diffraction ◽  
X Ray ◽  
State Diffusion

Aluminium matrix composites are both strong and lightweight, and are limited in their applications due to the proper choice of welding process. Conventional welding that is based on fusion at the welded joint is not suitable because it leads to the formation of certain defects at the welded joint. For this reason, solid-state welding such as diffusion bonding is one of the suitable joining methods, as there will be no melting of any of the constituents. The solid-state diffusion bonding at 520° C of Al6061-SiC nanocomposites was investigated. This composite material was made by powder metallurgy, where aluminium alloy Al6061 was selected as the base metal, and SiC nanoparticles with an average size of 50 nm were added as reinforced particles. The effects of bonding time on the microstructures and mechanical properties of the welded material were investigated. The main characterisation techniques were optical microscopy, scanning electron microscopy coupled with energy dispersive spectroscopy, x-ray diffraction, and microhardness measurements. We have found that increasing the holding time up to 3 h at 520° C strengthens the weldability of the two basic composite materials and increases their hardness. X-ray diffraction analysis did not reveal any new phase during diffusion welding; it is considered one of the advantages of using the solid-state diffusion welding technique for the assembly of this kind of composite material. The welding success of this composite material widens its field of use, such as the automotive or space industry, because it is a light material with high mechanical properties.

Joining of Ti3SiC2 with Ti–6Al–4V Alloy

2002 ◽  
Vol 17 (1) ◽  
pp. 52-59 ◽  
Author(s):  
N.F. Gao ◽  
Y. Miyamoto
Keyword(s):  
Solid State ◽  
Rate Constant ◽  
Liquid State ◽  
Parabolic Rate Constant ◽  
Diffusion Path ◽  
Solid State Diffusion ◽  
Diffusion Controlled ◽  
State Diffusion ◽  
Rate Controlled ◽  
Higher Temperature

The joining of a Ti3SiC2 ceramic with a Ti–6Al–4V alloy was carried out at the temperature range of 1200–1400 °C for 15 min to 4 h in a vacuum. The total diffusion path of joining was determined to be Ti3SiC2/Ti5Si3Cx/Ti5Si3Cx + TiCx/TiCx/Ti. The reaction was rate controlled by the solid-state diffusion below 1350 °C and turned to the liquid-state diffusion controlled with a dramatic increase of parabolic rate constant Kp when the temperature exceeded 1350 °C. The TiCx tended to grow at the boundarywith the Ti–6Al–4V alloy at a higher temperature and longer holding time. TheTi3SiC2/Ti–6Al–4V joint is expected to be applied to implant materials.

Investigation of the diffusion behavior in Sn-xAg-yCu/Cu solid state diffusion couples

2016 ◽  
Vol 686 ◽  
pp. 794-802 ◽  
Author(s):  
Yuan Yuan ◽  
Dajian Li ◽  
Yuanyuan Guan ◽  
Hans J. Seifert ◽  
Nele Moelans
Keyword(s):  
Solid State ◽  
Solid State Diffusion ◽  
Diffusion Couples ◽  
Diffusion Behavior ◽  
State Diffusion
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