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发明公开
CN109554703A 用于形成制品的方法、用于形成涡轮叶片的方法和涡轮叶片 审中-实审

用于形成制品的方法、用于形成涡轮叶片的方法和涡轮叶片
摘要：
本发明公开了用于形成制品的方法、用于形成涡轮叶片的方法和涡轮叶片。所述方法包括沿着焊接路径将HTW合金的粉末激光焊接到基材的表面，形成HTW合金的焊缝。焊接路径沿着焊接方向扩展，在表面上形成HTW合金的包覆层。激光焊接包括至少约11kJ/cm2的激光能量密度，并且将粉末激光焊接到表面包括约5–20ipm的焊接速度。焊接路径基本上不平行于参考线振荡，建立了比焊缝宽度更宽的包覆宽度。焊缝沿着每次振荡接触自身，使得包覆层是连续的并且基本上没有裂纹。本发明公开了涡轮叶片，其包括具有包覆层的凹槽叶顶，所述包覆层具有至少约0.2英寸的包覆层厚度。
摘要（英）：

The invention discloses a method for forming an article, a method for forming a turbine bucket, and a turbine bucket. The method for forming an article includes laser welding a powder of an HTW alloyto a surface of a substrate along a weld path, forming a weld bead of the HTW alloy. The weld path is propagated along a weld direction, forming a cladding layer of the HTW alloy on the surface. The laser welding includes a laser energy density of at least 11 kJ/cm<2>, and laser welding the powder to the surface includes a welding speed of 5-20 ipm. The weld path oscillates essentially nonparallelto a reference line, establishing a cladding width wider than the weld bead width. The weld bead contacts itself along each oscillation such that the cladding layer is continuous. A turbine bucket isdisclosed including a squealer tip having the cladding layer with a cladding layer thickness of at least 0.2 inches.

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