Mehdi Taherishargh

6 Questions 11 Answers 0 Followers

Questions related from Mehdi Taherishargh

Is it possible to have elastic modulus of 9 GPa for A356 Al alloy?

I have casted a rod of A356 alloy alloy and got the compression test samples fro the center of it. The elastic modulus was measured to be 9 GPa which is far from average which has been reported...

27 February 2014 4,695 3 View

Is it possible to end up with an elastic modulus that is more than 72 GPa for A356 Al alloy after T6 heat treatment?

I applied T6 heat treatment on A356 alloy. Surprisingly, the compression test graphs showed elastic modulus of 97 Gpa which seems odd to me. The yield stress of the alloy calculated to be 276 Mpa...

24 February 2014 6,809 15 View

Is the Expanded Perlite the same as ceramic hollow sphere, glass foam, glass microsphere, porous ceramic, etc.?

I am working on a kind of composite material in which expanded perlite particles are as the second phase. There are some references in the same area working on ceramic hollow spheres or...

24 June 2013 7,902 0 View

What are the hazards of melting lead oxide (PbO) to make a PbO-SiO2 glass?

As a marginal part of my project, I should melt down the PbO along with 8 wt% SiO2 to make a high density glass with low viscosity. But, PbO is so toxic. I wanted to know the best way of mixing...

06 May 2013 3,294 15 View

What is the best steel for making a permanent mould for casting of a metal in temperatures between 900-1100 Celsius?

In our work we need a hot working steel with the service temperature of 1100 Celsius. Actually T300 ma be a good candidate but I am looking for a cheaper one.

12 March 2013 4,912 6 View

Would corrosion take place if Aluminum and NaCl are put in contact with each other in a completely dry container or box?

We want to do a process in which the NaCl may be entrapped in Aluminum after solidification. I am concerned about the possible corrosion as a result of salt presence in bulk.

20 February 2013 603 11 View