CASTING METHODS AND ARTICLES

• Main Authors: CUI YAN, SRIKANTH CHANDRUDU KOTTILINGAM, LIN DECHAO, LAYLOCK MATTHEW
• Format: Patent
• Language: English; Japanese
• Published: 10.08.2017
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; ALLOYS; BLASTING; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; ENGINE PLANTS IN GENERAL; FERROUS OR NON-FERROUS ALLOYS; GAS-TURBINE PLANTS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PERFORMING OPERATIONS; POWDER METALLURGY; STEAM ENGINES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

PROBLEM TO BE SOLVED: To provide articles and methods for casting the articles, which include two compositionally distinct materials having two distinct grain structures integrally formed as a single continuous article, using hard-to-weld (HTW) alloys, such as nickel-based superalloys and specific Al-Ti alloys.SOLUTION: In the manufacturing methods, a molten first material 108 is introduced into a mold which distributes the first material to form a first region 102 of an article 100 where it is subjected to a first condition suitable for growing a first grain structure; and a molten second material 110, compositionally distinct from the first material, is introduced into the mold to form a second region 104 of the article. A hybridized material 112 is formed by intermixing a first portion of the second material with a second portion of the first material. A second portion of the second material is subjected to a second condition suitable for growing a second grain structure distinct from the first grain structure, forming the second region of the article. The first region and the second region are integrally formed as a single continuous article with a hybridized region 106 formed therebetween.SELECTED DRAWING: Figure 1 【課題】Ｎｉ基超合金及び特定のＡｌ−Ｔｉ合金等の難溶接（ＨＴＷ）合金を用いる、単一の連続的な物品として一体成形の２つの異なる結晶粒組織を有する２つの組成的に異なる材料を含む物品及び物品を鋳造する方法の提供。【解決手段】溶融した第１の材料１０８を、分配する鋳型に投入し、第１の結晶粒組織の生成に適した第１の条件に付し、物品１００の第１の領域１０２を形成し、第１の材料とは組成的に異なる、溶融した第２の材料１１０を鋳型に投入し、物品の第２の領域１０４を形成する方法。第２の材料の第１の部分と、第１の材料の第２の部分を混合して、ハイブリッド材料１１２を形成。第２の材料の第２の部分を、第１の結晶粒組織と異なる第２の結晶粒組織を生成するのに適した第２の条件に付し、物品の第２の領域を形成する。第１の領域及び第２の領域は、ハイブリッド領域１０６をその間に形成した、単一の連続的な物品で一体成形する製造方法。【選択図】図１