WO2021196713A1 - 基底触发单晶高温合金定向凝固工艺 - Google Patents
基底触发单晶高温合金定向凝固工艺 Download PDFInfo
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- WO2021196713A1 WO2021196713A1 PCT/CN2020/134913 CN2020134913W WO2021196713A1 WO 2021196713 A1 WO2021196713 A1 WO 2021196713A1 CN 2020134913 W CN2020134913 W CN 2020134913W WO 2021196713 A1 WO2021196713 A1 WO 2021196713A1
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- single crystal
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- superalloy
- directional solidification
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
- B22D27/045—Directionally solidified castings
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
- C30B11/003—Heating or cooling of the melt or the crystallised material
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
- C30B11/02—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method without using solvents
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
- C30B11/14—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method characterised by the seed, e.g. its crystallographic orientation
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/52—Alloys
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
Claims (10)
- 一种基底触发单晶高温合金定向凝固工艺,其特征在于,包括以下步骤:(1)制备与单晶高温合金晶体学特征相匹配的单晶基底材料;(2)利用得到的单晶基底材料制备单晶基底激冷盘;(3)将得到的单晶基底激冷盘应用于定向凝固设备中,进行高温合金熔炼和定向凝固制备,即制备得到单晶合金产品。
- 根据权利要求1所述的一种基底触发单晶高温合金定向凝固工艺,其特征在于,步骤(1)所述单晶高温合金与单晶基底材料的晶体学特征满足以下关系:所述单晶基底材料和高温合金熔体接触的晶面与所述单晶高温合金的晶面之间的晶格错配度≤7.8%。
- 根据权利要求2所述的一种基底触发单晶高温合金定向凝固工艺,其特征在于,所述单晶基底材料和高温合金熔体接触的晶面选择低指数晶面。
- 根据权利要求1所述的一种基底触发单晶高温合金定向凝固工艺,其特征在于,步骤(1)所述的单晶基底材料使用选晶法定向凝固工艺制备,并采用以下方法检测:采用表面吹沙、宏观腐蚀处理以确定其宏观组织无杂晶;利用劳埃衍射仪对检查合格的单晶基底材料进行取向测试;依据劳埃衍射仪测试结果,采用线切割对单晶基底材料进行切割,获得拥有预期晶面的单晶基底材料。
- 根据权利要求4所述的一种基底触发单晶高温合金定向凝固工艺,其特征在于,所述单晶基底材料为圆柱形的单晶棒。
- 根据权利要求1所述的一种基底触发单晶高温合金定向凝固工艺,其特征在于,步骤(2)所述的单晶基底激冷盘也可采用单晶基底材料和紫铜复合加工而成。
- 根据权利要求1或6所述的一种基底触发单晶高温合金定向 凝固工艺,其特征在于,所述单晶基底激冷盘内部设有环形的冷却水道,外部采用螺纹与定向凝固设备中的引晶杆固定。
- 根据权利要求1所述的一种基底触发单晶高温合金定向凝固工艺,其特征在于,步骤(3)高温合金熔炼温度为1450~1600℃,高温合金熔体倾转浇铸速度为3~10°/s,定向凝固制备过程中上保温炉膛和下保温炉膛的温度分别为1500~1600℃和1450~1550℃,抽拉速度为20um/s~100um/s。
- 根据权利要求1所述的一种基底触发单晶高温合金定向凝固工艺,其特征在于,制备得到的单晶合金产品进行宏观组织和微观组织检测。
- 根据权利要求9所述的一种基底触发单晶高温合金定向凝固工艺,其特征在于,宏观组织检查分为表面喷砂和宏观腐蚀两步,表面喷砂时间为5min~10min,宏观腐蚀剂和腐蚀时间由高温合金的具体型号确定。
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US17/773,051 US20220395897A1 (en) | 2020-03-30 | 2020-12-09 | Substrate-triggered directional solidification process for single crystal superalloy |
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CN111364096B (zh) * | 2020-03-30 | 2021-01-22 | 上海交通大学 | 基底触发单晶高温合金定向凝固工艺 |
CN112453357B (zh) * | 2020-11-25 | 2022-02-11 | 中国科学院金属研究所 | 台体型籽晶制备重型燃机用大尺寸单晶叶片的方法 |
CN113073379B (zh) * | 2021-03-04 | 2022-11-01 | 贵阳航发精密铸造有限公司 | 籽晶法生长单晶叶片工程化应用的籽晶制备工艺 |
CN112974732B (zh) * | 2021-05-12 | 2021-07-30 | 中国航发北京航空材料研究院 | 一种采用固溶态柱状晶结合选晶制备单晶高温合金的方法 |
CN114622275B (zh) * | 2022-03-04 | 2024-01-26 | 潍坊科技学院 | 一种单晶高温合金铸件定向凝固用籽晶及其制备和应用 |
CN115047160B (zh) * | 2022-04-28 | 2023-11-03 | 上海交通大学 | 一种单晶高温合金铸造性能评估装置及评估方法 |
CN115415488A (zh) * | 2022-07-27 | 2022-12-02 | 上海交通大学 | 一种超高品质单晶铜水平连铸制备工艺 |
CN117684047B (zh) * | 2024-02-04 | 2024-04-26 | 四川航大新材料有限公司 | 一种燃气轮机涡轮叶片用高温合金及其制备方法和应用 |
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CN111364096A (zh) * | 2020-03-30 | 2020-07-03 | 上海交通大学 | 基底触发单晶高温合金定向凝固工艺 |
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US4353405A (en) * | 1980-04-18 | 1982-10-12 | Trw Inc. | Casting method |
US4412577A (en) * | 1982-01-27 | 1983-11-01 | United Technologies Corporation | Control of seed melt-back during directional solidification of metals |
EP0171343A1 (en) * | 1984-05-11 | 1986-02-12 | United Technologies Corporation | Polygon cross section seed for directional solidification |
CN108624959B (zh) * | 2018-04-17 | 2021-01-05 | 西北工业大学 | 使用经固溶处理的籽晶制备单晶高温合金的方法 |
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- 2020-03-30 CN CN202010234442.8A patent/CN111364096B/zh active Active
- 2020-12-09 WO PCT/CN2020/134913 patent/WO2021196713A1/zh active Application Filing
- 2020-12-09 US US17/773,051 patent/US20220395897A1/en active Pending
Patent Citations (6)
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CA1142839A (en) * | 1978-12-13 | 1983-03-15 | Bruce E. Terkelsen | Method and apparatus for epitaxial solidification |
US4714101A (en) * | 1981-04-02 | 1987-12-22 | United Technologies Corporation | Method and apparatus for epitaxial solidification |
CN107747120A (zh) * | 2017-10-23 | 2018-03-02 | 中国科学院金属研究所 | 一种Ni基单晶高温合金生长过程中枝晶间距的控制方法 |
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CN109082710A (zh) * | 2018-09-17 | 2018-12-25 | 中国科学院金属研究所 | 一种化学成分连续梯度分布的镍基单晶高温合金试棒的制备方法 |
CN111364096A (zh) * | 2020-03-30 | 2020-07-03 | 上海交通大学 | 基底触发单晶高温合金定向凝固工艺 |
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