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发明公开
CN104625474A 用于高温合金的钎焊合金组分及钎焊方法 无效 - 撤回

用于高温合金的钎焊合金组分及钎焊方法
摘要：
本发明涉及用于高温合金的钎焊合金组分及钎焊方法。具体地，提供了一种多组分钎焊填料合金，包括以重量计60～70％的CM247高温合金以及BRB钎焊合金，所述钎焊材料合金被扩散钎焊到CM247合金基材基底上，例如燃气涡轮叶片或轮叶。基底/钎焊界面可以在之后进行焊接修复，而不会发生抗熔化和界面处的钎焊合金流失。焊接区和附近区域抵抗凝固裂纹。将所述组分合金钎焊到基材基底后，所述部件可以返回继续服务。此后，如果需要修复将来服役中的缺陷，所述部件仍然可以通过焊接或再次钎焊进行修复。
摘要（英）：

The invention relates to braze alloy compositions and brazing methods for superalloys. A multi-component braze filler alloy comprising 60-70% by weight CM247 superalloy and BRB braze alloy is diffusion brazed to a CM247 alloy base substrate, such as a gas turbine blade or vane. The substrate/braze interface may be subsequently weld-repaired without de-melting and migrating the braze alloy from the interface. The weld zone and surrounding area are solidification crack resistant. After the alloy composition is brazed to the base substrate the component may be returned to service. Thereafter the component remains repairable by welding or re-brazing, if needed to correct future in-service defects.

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