Gevorg Ter-Isahakyan

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Questions related from Gevorg Ter-Isahakyan

What temperature range is safe for using a tube furnace with pure oxygen?

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 8,668 1 View

Are any materials truly isotropic, or is this only an approximation?

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 911 3 View

What are good etchants (aside from picral) and imaging modes for viewing martensite in quenched 1050 steel?

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 1,738 1 View