Written in English
|Statement||by Richard G. Connell.|
|The Physical Object|
|Pagination||xxii, 529 leaves.|
|Number of Pages||529|
The microstructural evolution of Al– Cu– Mg– Fe– Ni (AA) alloy after °C/18 h aging, as well as after and °C/ h creep, has been studied by transmission. Full text of "Microstructural evolution of aluminum during the course of high temperature creep" See other formats. This paper concerns the reliability of ultrasonically bonded high purity thick aluminium wires at elevated temperature. To date, the evolution of the microstructure of wire bonds during thermomechanical exposure and its influence on reliability have not been fully characterised and understood, particularly as they pertain to thermal cycling regimes which exceed ° by: High temperature creep and useful creep life behavior of Al-Cu-Mg (T aluminum) alloy was investigated by conducting constant stress uniaxial tensile creep tests at different temperatures.
The microstructural evolution of lamellar Ti48Al–2Nb–2Cr during deformation at temperatures between and K was investigated by light optical . The effects of , 1, 2 and 4 wt% Gd additions on the microstructural evolution and high-temperature mechanical properties of a cast Al–15Mg 2 Si in situ composite were investigated by shear punch testing (SPT) in the temperature range of – K. The microstructural studies indicated that Gd addition changes the irregular morphology of the primary Mg 2 Si particles to . Recently, Kang and Mercer reported a new method for in situ measurement of creep behavior of α-Al 2 O 3 TGO of 1–4 μm in thickness, formed on Fecralloy doped with yttrium contents of and ppm at high temperature. 36 The steady state creep rates were found to be higher than that of the bulk polycrystalline α-Al 2 O 3. The microstructural evolution of these alloys before and after high-temperature creep tests was investigated by employing scanning electron microscopy and transmission electron microscopy.
New Monte Carlo models have recently been developed to predict microstructural evolution in steels and aluminium alloys during heat treatment and high temperature service. The microstructural. The two aluminum alloys discussed in this work, H and T, were selected due to their prevalence as lightweight structural alloys and their differing strengthening mechanisms ( – strain hardened, – precipitation hardened). The high temperature quasi-static mechanical and creep behavior are discussed. case of aluminium, studies on the microstructural evolution during ARB have been widely performed on pure aluminium  and several alloys such as AA , AA  and AA , while a few studies have been performed on the aeronautical Al alloy , despite the large advantages that would arise from refining its microstructure. This microstructural evolution sheds light on the evolution of the alloy strength at elevated temperature. For short-term yield tests, as-fabricated samples displayed higher yield strengths than peak-aged samples at temperatures above °C (e.g., 87 vs 24 MPa at °C).