公开(公告)号：US08561298B2

公开(公告)日：2013-10-22

申请号：US12039966

申请日：2008-02-29

申请人： James A. Morin ,  Lucian Iordache ,  Ovidiu Timotin ,  Sooyeum Oh

发明人： James A. Morin ,  Lucian Iordache ,  Ovidiu Timotin ,  Sooyeum Oh

IPC分类号： B21K25/00 ,  B23P15/04

CPC分类号： C22F1/10 ,  B23K2101/001 ,  Y10T29/49316 ,  Y10T29/49318 ,  Y10T29/4932 ,  Y10T29/49321 ,  Y10T29/49336

摘要： A method for welding superalloy components at ambient temperature conditions while reducing the propensity of the superalloy material to crack as a result of the weld. A root pass region of the weld is formed using a filler material that exhibits ductility that is higher than that of the base superalloy material. The ductile material mitigates stress in the root region, thereby preventing the formation of cracks. A remaining portion of the weld is formed using a filler material that essentially matches the base superalloy material. The method may utilize a pre-weld heat treatment to grow a gamma prime precipitate phase in the superalloy material, a chill fixture to remove heat during welding, a relief cut to reduce stress in the root region, and a conventional post-weld heat treatment.

摘要翻译： 一种用于在环境温度条件下焊接超合金部件的方法，同时降低由于焊接而导致的超合金材料的裂纹倾向。 使用表现出高于基础超级合金材料的延展性的填充材料形成焊缝的根部通过区域。 延性材料减轻了根部的应力，从而防止了裂纹的形成。 使用基本上与基底超合金材料相匹配的填充材料形成焊缝的剩余部分。 该方法可以利用预焊接热处理来在超级合金材料中生长γ'沉淀相，在焊接期间除去热量的冷却夹具，减小根部区域中的应力的浮雕切割以及常规的后焊接热处理 。