Method for heat treatment of high-toughness weld metals

Details Method for heat treatment of high-toughness weld metals Method for heat treatment of high-toughness weld metals

1974-07-29

1977-12-13

Lovell, C.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

75124, 148134, 148143, 148144, 428615, C21D 950

Patent

active

040627055

ABSTRACT:
A method for obtaining a weld metal having excellent toughness at low temperatures as below -40.degree. C, which method comprises heating the weld metal having a specific steel composition to its austenitizing temperature and cooling it or holding it at the temperature for not longer than 25 minutes and then quenching and tempering it. In order to further improve the low temperature toughness, the weld metal is reheated again to the Ac.sub.1 to Ac.sub.3 range. Excellent low temperature toughness of the weld metal can be obtained without the necessity of using any special welding materials.

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patent: 3745294 (1973-07-01), Arikawa
patent: 3773500 (1973-11-01), Kanazawa

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