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Questions related from Rohit Mathew
I have an Aluminium based composite that has carbides present as reinforcement. I am trying to evaluate the carbon content. Can someone suggest a few experimental techniques that are accurate over...
26 February 2025 7,886 4 View
I generally used a solution of orthophosphoric acid at 1.75V for electropolishing pure copper but I have found that it takes about 10-15 minutes or more to obtain the good flat finish required for...
21 November 2016 2,188 5 View
Does Polyethlylene Glycol absorb water when exposed to air in room conditions? Is it possible to remove the absorbed water by simple heating?
20 January 2016 549 8 View
I have roll bonded and clad 2 dissimilar metals together by cold roll bonding technique and would like to test the bond/interface strength of the cladding. The sample dimensions here limit me from...
10 December 2015 9,533 1 View
I would like to know what precautions one should take while performing tensile testing in LAMMPS. For example; tensile testing of Copper. I would like to perform the test at room temperature...
26 October 2015 6,436 6 View
We know that in low SFE materials, dislocations may split into partials through energetically favourable reactions. But does the grain size or domain size also affect how the reaction from full...
10 September 2015 7,878 2 View
In copper we observe annealing twins, growth twins or deformation twins regularly based on the processing history. Is it possible to process copper such that the twins are not nucleated or the...
04 September 2015 9,291 1 View
In metals if we say a boundary is coherent, it is understood that the atoms on either side of the boundary have a one-to-one matching bonds on the other side and for incoherent boundaries all...
26 August 2015 4,219 18 View
The sample (copper) is rolled to about 6 mm thickness. I wanted to do compression testing on samples along the rolling direction. Since the sample thickness was to small I was left in a...
29 July 2015 9,294 14 View
I have deformed pure copper to various strains and have done XRD using a panalytical machine? I would like to know if its possible to caluclate dislocation densities from these data.
27 July 2015 6,476 7 View
During nanoindentation we use an indenter at certain loads to penetrate a surface and used the load-displacement data to calculate the hardness value and reduced modulus. But there is no mention...
09 March 2015 2,306 7 View
I am trying to etch pure copper which has been well annealed and rolled. The FeCl3+HCl+Water solution, although gives good results it does not give clean optical microstructures. The rolled...
14 January 2015 7,375 3 View
These are the 3 major types of twinning in metals. I would like to know if there is any difference in terms of interface/boundary energy of these 3 types if I hypothetically have coherent...
26 August 2014 3,554 6 View
I would like to understand the behavior of initial dislocation density and grain boundaries and associated yield strength. I have read that radiation damage increases dislocation loops, so can a...
02 May 2014 7,025 1 View
