Search
Filters
Close

98268 CRACK GROWTH IN HIGH TEMPERATURE MATERIALS

Product Number: 51300-98268-SG
ISBN: 98268 1998 CP
Author: N. S. Stoloff
$0.00
$20.00
$20.00
Many intermetallic compounds are brittle at low temperatures. Some compounds, including NiAl and MoSi2 seem to be intrinsically brittle. Other compounds, including Ni3Al, FeAl and Fe3Al, are reasonably ductile when tested in inert environments. Water and water vapor can severely embrittle these and other compounds because they contain an active element such as aluminum or silicon. The release of atomic hydrogen from water leads, at room temperature, to hydrogen embrittlement. Another source of embrittlement, at elevated temperatures, is oxygen from the atmosphere. The effects of aggressive environments on the crack growth behavior of several intermetallics under monotonic or cyclic loading are described. Alleviation of embrittlement by means of alloying, the use of coatings or by prestrain are described, although no single method is effective for all intermetallics. A brief survey of environmentally induced crack growth in superalloys is included. Keywords: aluminides, crack, fatigue, fracture, grain boundaries, hydrogen, intermetallics, moisture, oxygen, silicides, superalloys
Many intermetallic compounds are brittle at low temperatures. Some compounds, including NiAl and MoSi2 seem to be intrinsically brittle. Other compounds, including Ni3Al, FeAl and Fe3Al, are reasonably ductile when tested in inert environments. Water and water vapor can severely embrittle these and other compounds because they contain an active element such as aluminum or silicon. The release of atomic hydrogen from water leads, at room temperature, to hydrogen embrittlement. Another source of embrittlement, at elevated temperatures, is oxygen from the atmosphere. The effects of aggressive environments on the crack growth behavior of several intermetallics under monotonic or cyclic loading are described. Alleviation of embrittlement by means of alloying, the use of coatings or by prestrain are described, although no single method is effective for all intermetallics. A brief survey of environmentally induced crack growth in superalloys is included. Keywords: aluminides, crack, fatigue, fracture, grain boundaries, hydrogen, intermetallics, moisture, oxygen, silicides, superalloys
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for 00527 MATERIALS PERFORMANCE IN HIGH-TEMPERATURE
Available for download

00527 MATERIALS PERFORMANCE IN HIGH-TEMPERATURE ENVIRONMENTS - MAKING THE CHOICE

Product Number: 51300-00527-SG
ISBN: 00527 2000 CP
Author: Peter Elliott
$20.00
Picture for Crack Stability Criteria and its Implications on Crack Growth Rates Mechanisms and Crack Geometry
Available for download

51313-02772-Crack Stability Criteria and its Implications on Crack Growth Rates Mechanisms and Crack Geometry

Product Number: 51313-02772-SG
ISBN: 02772 2013 CP
Author: Colin Scott
Publication Date: 2013
$20.00
Picture for 96173 HIGH TEMPERATURE CORROSION BY DEPOSITS
Available for download

96173 HIGH TEMPERATURE CORROSION BY DEPOSITS OF ALKALI SALTS

Product Number: 51300-96173-SG
ISBN: 96173 1996 CP
Author: J. Klower
$20.00