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High γ′ content nickel-based superalloy powder for additive manufacturing, its use method, nickel-based superalloy component
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A nickel-based superalloy and additive manufacturing technology, applied in the field of high γ' content nickel-based superalloy powder for additive manufacturing and nickel-based superalloy components, can solve problems such as hot cracks that cannot be completely avoided, and achieve high-temperature mechanical properties Good, meet the needs of use, improve the effect of printability
Active Publication Date: 2021-12-28
常州钢研极光增材制造有限公司 +1
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[0004] Existing additive manufacturing techniques involving IN738LC-based Ni-based superalloy powders with improved chemical composition control and reduce trace elements such as Si and Zr that promote hot cracking, but this cannot completely avoid alloys with higher γ′ content hot crack in
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Embodiment 1
[0100] A new type of nickel-based superalloy powder for additive manufacturing, in terms of weight percentage, the chemical composition is:
[0101] Cr: 13.2%, Co: 8.6%, Al: 4.0%, Ti: 3.9%, Fe: 3.6%, W: 2.8%, Ta: 1.9%, Mo: 1.9%, Hf: 1.6%, Nb: 1%, C: 0.06%, Si: 0.04%, Mn: 0.01%, Zr: 0.02%, B: 0.007%, and the balance is Ni and impurity elements.
[0103] Using the superalloy powder described in Example 1, the superalloy sample was prepared by the selective laser melting process. The printing process used 220W laser power, 1200mm / s laser scanning speed, 100μm spot diameter, 90μm laser spacing, 30μm. Powder thickness. The metallographic structure observation and density detection were c...
Embodiment 2
[0112] The difference between this example and Example 1 is that the chemical composition of the nickel-based superalloy powder for additive manufacturing, in terms of weight percentage, is: Cr: 12%, Co: 8%, Al: 3.8%, Ti: 3.8%, Fe: 3%, W: 2.4%, Ta: 1.9%, Mo: 1.6%, Hf: 0.1%, Nb: 1%, C: 0.06%, Si: 0.04%, Mn: 0.01%, Zr: 0.02%, B: 0.007%, the balance is Ni and impurity elements.
Embodiment 3
[0114] The difference between this embodiment and Embodiment 1 is that the chemical composition of the nickel-based superalloy powder for additive manufacturing is: Cr: 14%, Co: 9%, Al: 4.2%, Ti: 4.2%, W: 2.8%, Fe: 2.8%, Ta: 2.1%, Mo: 2%, Hf: 2%, Nb: 1.2%, C: 0.12%, Si: 0.1%, Mn: 0.02%, Zr: 0.02%, B: 0.01%, the balance is Ni and impurity elements.
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Abstract
The invention provides a nickel-based superalloypowder with high γ′ content for additive manufacturing, a method for using the same, and a nickel-based superalloy component, and relates to the technical field of powder-based additive manufacturing, high-γ′-content nickel-based high-temperature alloypowder for additive manufacturing The alloy powder is calculated by weight percentage, and its chemical composition includes: Cr12~14%, Co8~9%, Al3.8~4.2%, Ti3.8~4.2%, W2.4~2.8%, Ta1.9~2.1%, Mo1 .6~2.0%, Nb1.0~1.2%, Fe0.1~5%, Hf0.1~2.0, C≤0.12%, Si≤0.1%, Mn≤0.02%, Zr<0.03%, B≤0.01% , and the balance is Ni and impurity elements. Using this superalloy powder, dense, crack-free complex parts that meet the strength requirements in ultra-high temperature environments can be printed by selective laser melting technology.
Description
technical field [0001] The invention relates to the technical field of powder-based additive manufacturing, in particular to a nickel-based superalloy powder with high γ' content for additive manufacturing, a method for using the same, and a nickel-based superalloy component. Background technique [0002] When extending additive manufacturing technology to high-performance superalloys, it was found that although there are many types of high-performance superalloys, they are all developed for traditional preparation processes. In order to ensure printability, the superalloy materials currently used in the field of additive manufacturing are mainly composed of weldable superalloys (solid solution strengthening alloys (such as IN625) and low-content γ′ alloys (such as IN718, Hasttelloy X), etc.). [0003] IN625, IN718 and Hastelloy X have problems such as insufficient temperature resistance and low high-temperature mechanical properties, and cannot be used for parts with operat...
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