Welding of stell ABNT4140 without posterior thermal treatment.

Autor:	Jesualdo Pereira Farias, Willys Machado Aguiar
Jazyk:	portugalština
Rok vydání:	2009
Předmět:	aço abnt 4140. soldagem. dupla-camada zac.. Engineering (General). Civil engineering (General) TA1-2040 Technology (General) T1-995
Zdroj:	Revista Tecnologia, Vol 24, Iss 1 (2009)
Druh dokumentu:	article
ISSN:	0101-8191 2318-0730
Popis:	The procedure for conventional welding of the AISI 4140 steel, due to the martensite formation in the heated affected zone (HAZ), contemplates a postwelding heat treatment (PWHT) to relief the stress and to improve the toughness of this zone. This thermal treatment, sometimes, becomes unfeasible due to some factors such as size of the piece, repair in the field and high cost. The main goals of the technique of the two-layer welding are to avoid the heat treatment and to guarantee good mechanical properties for the welded piece. The results of this work showed that it is possible to eliminate PWHT in the welding of the AISI 4140 steel.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/1d0d7b8eb9eb430f9f95d4272b787e1f Zobrazit plný text záznamu View record in DOAJ