Karthik Gopal

7 Questions 6 Answers 0 Followers

Questions related from Karthik Gopal

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 2,960 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 6,915 8 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 667 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 8,403 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 594 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 7,538 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 4,921 1 View