The stress and temperature dependence of creep in an Al-2.0wt%Li alloy
Goodson, Earl F., Sr.
McNelley, Terry R.
Fox, Alan G.
MetadataShow full item record
The effect of stress and temperature on the creep behavior of an Al-2.0wt%.Li alloy was investigated in the temperature range from 300 to 5000C. This temperature interval corresponds to a solid solution of Li in Al. Experimental results indicate that Al-2.0wt%Li behaves as a pure metal class alloy (class II). This is demonstrated by several creep characteristics including the value of the stress exponent (n - 5), the shape of the creep curve, and the nature of the creep transient after a temperature change. However, anomalous behavior of the activation energy was observed. Activation energies up to 55 kcal/mole, decreasing to approximately 33 kcal/mole at higher temperatures, were observed by the temperature cycling technique.
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Wang, Q.; Kalogiros, J.A.; Ramp, S.R.; Paduan, J.D.; Buzorius, G.; Jonsson, H. (2011-05);Aircraft measurements obtained during the 2003–04 Autonomous Ocean Sampling Network (AOSN-II) project were used to study the effect of small-scale variations of near-surface wind stress on coastal upwelling in the area ...
Cissel, Matthew B. (Monterey, California. Naval Postgraduate School, 1991-12);The mechanical properties at elevated temperatures of a new dispersion strengthened aluminum, iron, vanadium silicon alloy were evaluated. Constant extension rate (tension) tests were conducted on an Instron machine and ...
Scott, Brian E-S. (Monterey, California. Naval Postgraduate School, 2013-03);This work examines the effect of stress on the rate of sensitization, the rate of pitting corrosion and the rate of crack nucleation of aluminum alloy 5083-H116 aluminum. Stress corrosion cracking in aluminum superstructures ...