Karthik Gopal

9 Questions 6 Answers 0 Followers

Questions related from Karthik Gopal

Can one explain GIbbs energy and its importance in material science to like a dummy but in a detailed manner so I can understand the math behind it?

I am trying to understand Gibbs energy at the atomic/ quantum level and how it affects the study of material science or its importance in material science like in many areas.

21 March 2025 3,091 3 View

How does polarity affect welding? Whast is the arc physics (in detail) behind this phenomenon?

I am getting conflicting information from the web. Some say it is one way for arc welding and another way for tig welding and mig welding. I need some clarity as to how arc physics works. There is...

06 February 2024 3,082 2 View

What phenomenon exactly causes the grains to grow during annealing process after recrystallization in steel?

I would like to know ho the grain grows a technical detailed explanation with a visual

19 October 2022 6,970 8 View

How does the grain size reduce during normalizing or become fine when it is just like cooling molten steel when it is refined?

How does the grain size change since when the steel is cooled from its molten state in the electric arc furnace i am sure it is air cooled as well? Why does normalizing change the grain size since...

19 October 2022 4,010 0 View

In substitutional solid solutions, do the substituting atoms form chemical bonds as they replace the atoms? How are they replacing the existing atom?

I do not understand how atoms replacing the base metal in substitutional alloys actually replace the base metal atoms and not form bonds.

21 September 2020 775 3 View

Can anyone give me a list of differences in mechanical properties between conventional manufacturing and additive manufacturing?

I would like to study so if you can provide a technical paper that details the metallurgical differences in the mechanical properties of objects made by additive manufacturing it will be really...

31 May 2019 8,449 2 View

Please tell me what the ductile to brittle transition temperature of Magnesium alloyed with 3% Al and 1%Zn would be. Even a close estimate is enough?

I am trying to see if we can use these kinds of materials in marine construction as they are light and have high strength.

27 February 2019 635 0 View

How is austenitic steel obtained at room temperature since in the Iron Carbon diagram we see it above the critical temperature ?

at 0.8% c above 723*C we have steel transforming from ferrite and cementite to austenite. But how do they obtain austenitic steel at room temperature

03 April 2017 7,602 3 View

What is the arc physics behind MIG using electrode positive and TIG using electrode negative?

I want to know the exact physics behind the difference in the welding techniques

11 March 2017 4,969 1 View