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Large structural, thin-wall castings made of metals subject to hot tearing, and their fabrication
Large structural, thin-wall castings made of metals subject to hot tearing, and their fabrication
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机译:由金属制成的大型结构薄壁铸件,容易受到热撕裂,并且其制造方法
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摘要
An article, such as a gas turbine engine mixer, is made by providing a mold structure defining a thin-walled, hollow article, and a base metal that is subject to hot tear cracking when cast in a generally equiaxed polycrystalline form, such as Rene' 108 and Mar-M247. The article is fabricated by introducing the molten base metal into the mold structure, and directionally solidifying the base metal in the mold structure to form a directionally oriented structure. The directionally oriented structure may be formed of a single grain or oriented multiple grains.
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