scholarly journals Diffusion Bonding of Si/Graphite and Si/Diamond by Hot Isostatic Pressing Method

2006 ◽  
Vol 47 (540) ◽  
pp. 37-43
Author(s):  
Jun TANABE ◽  
Takeshi SASAKI ◽  
Shigeo SATO ◽  
Masao MURAKAWA
Keyword(s):  
Diffusion Bonding ◽  
Hot Isostatic Pressing ◽  
Pressing Method ◽  
Isostatic Pressing

scholarly journals Ceramics Coating on Metal Surfaces by Hot Isostatic Pressing Method

1988 ◽  
Vol 96 (1115) ◽  
pp. 736-743 ◽  
Author(s):  
Kiichiro KAMATA ◽  
Hiroshi FUKUNAGA ◽  
Noriyuki HAYASHI ◽  
Isao TANABE ◽  
Kozo ISHIZAKI
Keyword(s):  
Metal Surfaces ◽  
Hot Isostatic Pressing ◽  
Pressing Method ◽  
Isostatic Pressing

High-Temperature Buckling Analysis of Titanium Cans Under External Pressure

1999 ◽  
Vol 121 (4) ◽  
pp. 364-368
Author(s):  
V. Koundy ◽  
C. Thiebaut
Keyword(s):  
Hot Isostatic Pressing ◽  
Shell Element ◽  
Element Model ◽  
External Pressure ◽  
Buckling Mode ◽  
Pressing Method ◽  
Isostatic Pressing ◽  
Powder Consolidation ◽  
Rupture Area ◽  
Numerical Finite Element

Powder metallurgy techniques are often used in the fabrication of finished and semi-finished articles. At the CEA, a cold followed by a hot isostatic pressing method is used to produce solid forms from various types of powder. Occasionally, during the hot isostatic pressing part of the process, buckling of the titanium envelope near to the sealed end leads to fracture of the can and incomplete powder consolidation. The aim of this paper is to investigate by numerical finite element simulation the fracture process. A 2-D shell element model with Fourier series taking into account plastic deformation of the can material has been considered and used to determine the buckling critical pressure and the corresponding buckling mode. The simulation has been used to eliminate failure of the can by modifying the temperature-pressure schedule or by changing the can design. The calculations show that reducing the sharp angles of the initial titanium can near the rupture area can resolve the buckling problem; however, this solution is not totally satisfactory due to the development of a zone of constriction (breaks and irregularities) in the compacted powder just behind the modified can wall. This geometrical defect leads to difficulties in machining the final product. A better solution to the problem is to increase the initial can temperature prior to application of the pressure. This leads to a can of enhanced ductility with a better ability to deform. This latter solution, which can be employed with or without can modifications, eliminates both the can’s buckling and the zone of constriction. These numerical results have been validated by recent tests performed in our laboratories.

Diffusion bonding W and RAFM-steel with an Fe interlayer by hot isostatic pressing

2020 ◽  
Vol 158 ◽  
pp. 111796
Author(s):  
Pan Huang ◽  
Yiming Wang ◽  
Huabei Peng ◽  
Jiming Chen ◽  
Pinghuai Wang
Keyword(s):  
Diffusion Bonding ◽  
Hot Isostatic Pressing ◽  
Isostatic Pressing ◽  
Rafm Steel

Comparison between Roll Diffusion Bonding and Hot Isostatic Pressing Production Processes of Ti6Al4V-SiCf Metal Matrix Composites

2011 ◽  
Vol 678 ◽  
pp. 145-154 ◽  
Author(s):  
Claudio Testani ◽  
F. Ferraro ◽  
Paolo Deodati ◽  
Riccardo Donnini ◽  
Roberto Montanari ◽  
...  
Keyword(s):  
Metal Matrix Composites ◽  
Diffusion Bonding ◽  
Metal Matrix ◽  
Hot Isostatic Pressing ◽  
Production Costs ◽  
Experimental Plant ◽  
Matrix Composites ◽  
Isostatic Pressing ◽  
Manufacturing Method ◽  
Hip Process

Titanium-metal-matrix composites (Ti-MMC) are materials with very large specific resistance and potential operative temperature up to 800° C. At present these composites are produced by Hot Isostatic Pressing (HIP), a reliable but expensive manufacturing method. To cut production costs, Centro Sviluppo Materiali SpA (CSM) has developed and patented an experimental plant for co-rolling at high temperature sheets of titanium alloy and silicon carbide monofilaments fabrics. The experimental Roll Diffusion Bonding (RDB) pilot plant permits a reduction of process costs of about 40% with respect to the HIP process. This work reports the results of microstructural and mechanical examinations carried out on composites realized by RDB and HIP. The comparison shows that the fibre-matrix interface is stable in both the composites while the mechanical properties of RDB composite are better due to its smaller grain size and high dislocation density.

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