Method for heat treatment of high-toughness weld metals
    1.
    发明授权
    Method for heat treatment of high-toughness weld metals 失效
    高韧性焊接金属热处理方法

    公开(公告)号:US4062705A

    公开(公告)日:1977-12-13

    申请号:US492754

    申请日:1974-07-29

    摘要: 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.

    摘要翻译: 一种获得在低于-40℃的低温下具有优异韧性的焊接金属的方法,该方法包括将具有特定钢组成的焊接金属加热至其奥氏体化温度并冷却或将其保持在不超过25℃的温度 几分钟,然后淬火回火。 为了进一步提高低温韧性,将焊接金属再次加热至Ac1〜Ac3的范围。 无需使用任何特殊的焊接材料即可获得焊接金属的优异的低温韧性。