Thursday, 24 April, 2014, 15:12 Posted by Piotr Drzymala
Research on compression hydrostatic structural elements of magnesium alloys for the three samples of alloy AZ91 and the three samples of alloy AZ31 -shaped flanges with the following parameters : the upper surface of the sample - 225 mm ², clearances on the sleeve in a matrix - 10um , strain rate - 0.1 mm / min , die temperature : 80 , 150, 200 + -10 degrees Celsius , the maximum stress of about 400 MPa. In the latter case, the force control is applied instead of controlling the position ( 2kN/min ) but remain in further studies with positional control . Acoustic emission was measured at a frequency of 160 kHz for a period of about half an hour , until the maximum force . In the case of acoustic research , for comparative purposes , it was necessary to carry out the calibration measurement on the sleeve of carbon steel. The value of the resultant force ( 90kN ) ensures the resilient nature of the deformation of steel, therefore, to exclude possible errors of interpretation akustograms magnesium alloys , e.g. due to friction. Examined the nature of the compression curves and comparing them with akustogramami for magnesium alloys and a small change in the dimensions of the sample shows that the deformation took place , and the peaks of akustogramach suggest twinning as the main deformation mechanism .
March report (K. Glowinski)
Wednesday, 23 April, 2014, 09:03 Posted by Krzysztof Glowinski
In March, after many months, I finally got a review of my paper "Analysis of experimental grain boundary distributions based on boundary-space metrics", and it will be published in Metallurgical and Materials Transactions A. I added a couple of features to my program, e.g., one can obtain a map with symmetry elements of grain boundary distributions for fixed misorientations.
Tuesday, 22 April, 2014, 13:27 Posted by Piotr Bobrowski
This month I was writing my PhD thesis. I was mainly focused on the 'Results' chapter. It took a lot of effort to prepare all the necessary graphs, pictures, plots and to write what is the meaning of all of them. I was also processing experimental results obtained in the previous month.
PhD report G. Kulesza (March'14)
Tuesday, 22 April, 2014, 09:39 Posted by Grazyna Kulesza
I took a new theme of quantum wires. According to literature data, it is possible to obtain such a nanostructures by chemical treatment. This means that the quantum wires do not have to be carried out only by lithography methods. Processing involves the metal particles deposition, which are reaction catalyst (Pd) or a mask (Ag). The etching is carried out in a limited reactive solutions based on HF and hydrogen peroxide. The first wires already created, now should be examined.
Tuesday, 22 April, 2014, 08:12 Posted by Honorata Kazimierczak
I'm still writing my PhD thesis. Among otherst, this month I'm working on the following chapters: - Electrodeposition of Zn from aqueous baths - Electrodeposition of Mo from aqueous bath - Combination of zinc with molybdenum - Zn-Mo phase diagram - Electrodeposition of Mo with Zn
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