Question

Which two of the following joining processes are autogenous?

i. Diffusion welding
ii. Electroslag welding
iii. Tungsten inert gas welding
iv. Friction welding

• A. $i\text{and}iv$
• B. $i\text{and}iii$
• C. $i\text{and}iv$
• D. $ii\text{and}iii$

Answer 1

The correct option is A $i\text{and}iv$

$i\text{and}iv$

All solid state weldings are autogenous welding.