Das Diffusionsschweißen von Titanlegierungen

Kellerer, H.

doi:10.1002/mawe.19720030506

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Discontinuity of grain growth with increasing temperature for TiAl6V4 according. [5] K denotes the grain size. D is the diffusion coefficient of V in Ti.…”

Section: Diffusion Welding Furnace and Diffusion Welding Proceduresmentioning

confidence: 99%

Systematic Investigation of the Diffusion Welding Behavior of the Austenitic Stainless Steel 304 (1.4301)

et al. 2014

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The deformation behavior of SS 304 is investigated at three diffusion welding temperatures and different durations. Samples 100 mm in height consisting of five pieces and manufactured from pultrusion round stock are used for studying the diffusion across the bonding planes. The joining crosssection varies from top to bottom covering bonding pressures from 15 to 25 MPa. From the results, a regression equation is derived allowing the calculation of expected deformation for any other temperature and duration within the investigated range. The approach is validated by an experiment with arbitrary temperature and welding duration. To study the influence of the grain size, orientation and passivation layers, a sample made of 51 sheets, 2 mm in thickness each, is diffusion welded and the results are compared.[*] T.

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“…Discontinuity of grain growth with increasing temperature for TiAl6V4 according. [5] K denotes the grain size. D is the diffusion coefficient of V in Ti.…”

Section: Diffusion Welding Furnace and Diffusion Welding Proceduresmentioning

confidence: 99%

Systematic Investigation of the Diffusion Welding Behavior of the Austenitic Stainless Steel 304 (1.4301)

et al. 2014

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Impact of scratch depth on vacuum tightness of diffusion bonded parts

Gietzelt

Hull

Toth

et al. 2018

Materialwissenschaft Werkst

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The surface roughness or solitary grooves decides about success or failure of diffusion bonding and vacuum tightness of the parts to be welded. Since surfaces have to be mated at atomic level to enable diffusion of atoms across bonding planes, also single deep scratches must be avoided to achieve vacuum tightness. Up to now there are no criteria which grooves can be tolerated. In fact, personal experience of the operator is essential to evaluate the surface before diffusion bonding. In this paper different load on top of a spike made of hard metal and sliding across the surface of austenitic stainless steel sheets of 1.4301 are employed to prepare grooves of different depth. A scanning electron microscope is used to visualize the dimension of the grooves. By white light interferometry, the depths according the load of the spice is evaluated. Diffusion bonding is performed at T = 1075 °C, t = 4 h, p = 12 MPa as well as with additional short peak loads. It turns out that the depth of grooves corresponds very well with the degree of leakage rate. Hence, by measuring the depth of grooves, prediction of leak rate can be predicted.

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Das Diffusionsschweißen von Titanlegierungen

Abstract: jedoch Ergebnisse vor, nach denen heterogene metallische Zusatze zu einer beachtlichen Verbesserung der Bruchzahigkeit und auch des Temperaturwechselverhaltens [18] von Sonderkeramiken gefuhrt haben.

Cited by 2 publications

References 6 publications

Systematic Investigation of the Diffusion Welding Behavior of the Austenitic Stainless Steel 304 (1.4301)

Systematic Investigation of the Diffusion Welding Behavior of the Austenitic Stainless Steel 304 (1.4301)

Impact of scratch depth on vacuum tightness of diffusion bonded parts

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