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Questions related from Gevorg Ter-Isahakyan
When we look at the binding energy spectrum of an element, we see peaks originating from various atomic orbitals. If the atom changes in chemical state, the peak positions shift around. For...
27 June 2020 8,286 1 View
I broke this piece of pure vanadium by putting it through a rolling machine. The fracture surface consists of many harsh, right angles. It's likely a form of brittle fracture but unlike anything...
26 November 2019 7,398 0 View
I must measure the oxidation resistance of several cobalt-based super alloys. Since time is short, it might be a good idea to leave them in a tube furnace filled with pure oxygen to accelerate the...
12 April 2019 8,737 1 View
Often times, a pure metal is described as isotropic because the mechanical properties do not vary with direction. However, I recently learned that Young's modulus changes with direction according...
31 January 2019 971 3 View
Additionally, I know it has to do with the minimization of strain energy. How, exactly, does that play into its formation?
01 August 2018 2,158 3 View
While performing Rockwell hardness tests (HRC scale) on a steel rod, I noticed that the diamond indenter caused the surface of the rod to slightly bend downward during the test; however, this...
31 March 2018 1,585 3 View
Currently I am using a 3 wt% concentration of nital to etch quenched 1050 steel. The martensite grains become visible but difficult to see for grain counting. I do not want to use picral due to...
09 February 2018 1,782 1 View
I performed EDS on an unknown alloy and found the following compositions in wt% from a scan of roughly the entire surface area: Al: 92. 94 Cu: 4.57 Mg: 1.40 Mn: 0.79 Fe: 0.2 Si: 0.1 EDS...
01 November 2017 629 4 View
