Resumo:
Stainless steel was developed at the beginning of the 20th century. XX and since then
it has been used in different variations according to its composition and formation
points, generating, among others, ferritic and austenitic steels. GTAW welding, also
known as TIG, is widely used in joining stainless steel joints. Used from domestic
equipment to motorsport, such materials occupy a large space among stainless steel
materials, and in this way this work proposed the analysis of the union of two types of
stainless steel, ferritic and austenitic, in order to evaluate their practical results in
relation to the quality of the joint obtained. , metallurgical properties through nondestructive tests such as metallographic tests. After metallurgical tests, a similar
behavior of the joints was observed in relation to the behavior of the formed phases,
microstructure and average grain size, where all presented austenite grains and delta
ferrite grain boundaries.