Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Journal of Achievements in Materials and Manufacturing Engineering

1 2007

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: transvarestraint west

Sortuj według:

Ogranicz wyniki do:

Experimental and theoretical evaluation of solidification cracking in weld metal

Arantes F. M. L., Trevisan R. E.

Journal of Achievements in Materials and Manufacturing Engineering

2007

Vol. 20, nr 1-2

407-410

Purpose: The main objective of this work is to compare the compatibility and reliability of the theoretical and experimental methodologies in the evaluation of the solidification cracking susceptibility of austenitic stainless steel weld metal, using three different electrodes. Design/methodology/approach: The cracking susceptibility of welds is described here through an experimental procedure using the transvarestraint test, and a theoretical procedure developed as a function of the chemical composition and microstructure of the material. The theoretical procedure requires knowledge of the weld metal chemical composition and microstructure, which was taken from the literature. Findings: Results obtained by means of tablets, parameter evaluation and fitting, micrographs and macrographs indicate that the experimental and theoretical methodologies are consistent with one another, and are both reliable, regardless of the welding process employed. Practical implications: The results of our theoretical analysis were in complete agreement with those obtained from the transvarestraint test, thus indicating that, if correctly applied, either of these methods can be used to determine the susceptibility of austenitic stainless steels to form solidification cracks. The choice between the experimental or the theoretical method should depend only on the availability and ease of application for each specific case. Originality/value: It is possible to make a theoretical assessment of the solidification cracking susceptibility of a given steel as a function of the: chemical composition, Creq/Nieq, ferrite number FN, microstructure, percentage of (S+P), and percentage of ferrite. Another way to measure the susceptibility of steel to solidification cracking is through experimental tests. The originality of this study is the numerical comparison made between the results provided by two different methods: the theoretical assessment and the practical technique, using the transvarestraint test.