Rohit Mathew

9 Questions 21 Answers 0 Followers

Questions related from Rohit Mathew

Can anyone please suggest a good fast electropolishing solution for pure copper for performing EBSD?

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 2,132 5 View

Is polyethylene glycol (PEG) hygroscopic?

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 501 8 View

What are the guidelines to be followed for tensile test simulations using LAMMPS?

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 6,375 6 View

Is it possible to obtain copper without any annealing twins through processing?

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 9,230 1 View

Can anyone help with the definitions of coherent and incoherent twin boundaries in metals?

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 4,154 18 View

How can one calculate strain in a Nanoindentation test?

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 2,242 7 View

I would like to etch both fully annealed as well work hardened copper. Can anyone please advise me on an etchant for pure copper for these conditions?

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 7,326 3 View

What is the difference between deformation, annealing and growth twins?

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 3,513 6 View

Is there a method to increase dislocation density in a material without deforming it?

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 6,973 1 View