Stress-Corrosion Cracking of Aluminum Alloy 7079-T6 in Seawater
Stress-Corrosion Cracking of Aluminum Alloy 7079-T6 in Seawater

Author: H. P. Chu

Publisher:

Published: 1969

Total Pages: 24

ISBN-13:

DOWNLOAD EBOOK

The resistance of a 7079-T6 aluminum alloy to stress-corrosion cracking in seawater was examined by testing precracked cantilever beams fabricated of the alloy. Specimens tested in the direction of rolling were found to have gained substantially in notch strength after long-time exposure to the stress-corrosion cracking condition. The results are compared with those obtained by a conventional test method. (Author).

Stress-corrosion Studies of Aluminum Alloy 7079-t6 in Seawater
Stress-corrosion Studies of Aluminum Alloy 7079-t6 in Seawater

Author: George A. Wacker

Publisher:

Published: 1966

Total Pages: 22

ISBN-13:

DOWNLOAD EBOOK

The stress-corrosion susceptibility of Aluminum Alloy 7079 in the T6 temper was investigated as a function of longitudinal, long-transverse, and short-transverse plate orientations. The alloy was found to be susceptible to stress-corrosion and pitting attack. Specimens oriented in the short transverse direction had the lowest resistance to damage in seawater. Variations in orientation-dependent stress-corrosion cracking susceptibility were related to microstructural characteristics. The alloy is considered unsuitable for naval applications under conditions conducive to stress corrosion. (Author).

Stress Corrosion Testing of 7079-T6 Aluminum Alloy in Various Environments
Stress Corrosion Testing of 7079-T6 Aluminum Alloy in Various Environments

Author: B. W. Lifka

Publisher:

Published: 1967

Total Pages: 21

ISBN-13:

DOWNLOAD EBOOK

Stress corrosion cracking of certain 7079-T6 aluminum alloy aircraft structures involving sustained tensile stress acting in an unfavorable grain direction has occurred sometimes in surprisingly mild environments. The resistance of short-transverse specimens of 7079-T6 products has been evaluated at different levels of applied stress in several different seacoast and inland industrial atmospheres. It was found that the atmosphere was more critical than the generally accepted alternate-immersion test using 3.5 per cent sodium chloride. The results of the outdoor tests are correlated with eight accelerated exposures; and consideration is given to the most suitable laboratory stress corrosion test environment for this alloy. A detailed analysis of the constant deformation methods of stressing is included.

Use of Precracked Specimens in Stress Corrosion Testing of High Strength Aluminum Alloys
Use of Precracked Specimens in Stress Corrosion Testing of High Strength Aluminum Alloys

Author: Michael V. Hyatt

Publisher:

Published:

Total Pages: 17

ISBN-13:

DOWNLOAD EBOOK

Resistance to stress-corrosion cracking of 10 high-strength aluminum alloys in a variety of heat-treatment conditions was measured using precracked double cantilever beam (DCB) specimens. A new technique is described, and stress-corrosion crack growth rates for the alloys tested are presented as a function of the plane-strain stress intensity K(I). Double cantilever beam specimen data correlated with established trends from smooth specimens tested by alternate immersion in 3.5% NaCl solution. From the crack growth rate data and the speed and simplicity with which it is obtained, it is concluded that the DCB specimen will be highly useful for (1) comparing and rating alloys, (2) developing new alloys and heat treatments, (3) comparing the effects of environments, (4) achieving or ensuring product uniformity, and (5) studying mechanisms of cracking. (Author).

Scientific and Technical Aerospace Reports
Scientific and Technical Aerospace Reports

Author:

Publisher:

Published: 1972

Total Pages: 946

ISBN-13:

DOWNLOAD EBOOK

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Sauerstoff
Sauerstoff

Author: Anthony A. Delyannis

Publisher: Springer Science & Business Media

Published: 2013-11-11

Total Pages: 359

ISBN-13: 3662133369

DOWNLOAD EBOOK

Processes for recovering fresh water from the oceans - of which men have dreamed since antiquity - have changed markedly in the last 20 years. In fact, it has become possible so to increase the productivity of the technical steps involved that the cost of production of such water is almost three orders of magnitude smaller than for other large volume industrial products. However, the monographs and comprehensive reviews which have appeared to date in this field have been prepared by specialists for specialists. In accordance with the tradition and objectives of the Gmelin Handbook, this bibliography has been prepared to provide access to aII of the ways in which fresh water can be, and has been, obtained on an industrial scale from the ocean. Production of fresh water from sea and brackish waters amounts to almost two million cubic meters per day, and this is increasing by about 25% per year. This means that it will increase nearly tenfold in 10 years.