Thermal treatment received condition

The cracking susceptibility of a micro-alloyed HSLA-100 steel was examined and compared to that of a HY-100 steel in the as-received condition and after heat treatment to simulate the thermal history of a single pass weld. Slow strain rate tensile tests were conducted on samples of these alloys with these thermal histories in an inert environment and in an aqueous solution during continuous cathodic charging at different potentials with respect to a reference electrode. Both alloys exhibited reduced ductilities at cathodic potentials indicating susceptibility to hydrogen embrittlement. The results of these experiments will be presented and discussed in relation to the observed microstructures and fractography. 

Among the various intrinsic defects at the MgO surface, the oxygen vacancy has received the strongest attention. O vacancies can be created by thermal treatments of hydroxylated MgO surfaces. The treatment conditions of the sample, such as the temperature of calcination and the extent of surface dehydration, significantly affect the morphology and defectivity of the oxide... 

After rough machining (and the working out of faults in the glass, if required), the blanks are converted from the glassy condition into the semi-crystalline condition through a thermal treatment. Due to that treatment the material also receives the property of zero thermal expansion. 

Thermal Analysis. A new or reassembled sample tube received the following conditioning treatment. It was evacuated, filled with gaseous fluorine to a pressure of about 1 atm., and periodically heated with a hot-air blower. After 1-15 hours, the fluorine was removed, and the tube was evacuated and weighed to obtain a tare. 

Silica transport under hydrothermal conditions is cited to support some mechanistic postulations regarding Structure IV. Why should the explanation for the occupancy factor in Structure IV be qualitatively different than for Structure II, since Structure IV only received an intensification of the treatment given Structure II The type of hydro-thermal environment present can have an important bearing on this silica transport phenomenon. In view of your use of ammonium sulfate, did you in fact achieve the conditions for transport cited by Wyart and Sabatier Residual sulfate would be expected to be quite persistent in such a system. A further point regarding Structure IV is that we have found that the lattice parameter is a smooth function of the degree of calcination severity, so that it might be expected to be smaller than the lattice parameter for Structure III on that basis alone. 

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