JP2019500491A - インサイチュでの金属マトリックス複合材料の積層構築 - Google Patents
インサイチュでの金属マトリックス複合材料の積層構築 Download PDFInfo
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Abstract
Description
Claims (11)
- 以下の元素:B、Cr、Si及びNi、及び任意にC及び/又はMnと組み合わされた、少なくとも50.0重量%のFe;を含む粒子形態の合金、を含む金属部品を層ごとに構築する方法であって、
基材を提供するステップと、
前記合金を溶融状態に溶融させ、冷却し、前記元素の固化層を形成することによって、前記合金の1つ以上の層を前記基材上に適用するステップであって、固体層のそれぞれが3.0〜200.0ミクロンで形成された厚さを有する、ステップと、
前記合金を熱処理するステップと、
任意に、前記基材を除去して自立した金属部品を形成するステップであって、1つ以上の前記固体層は、ASTM G65−04(2010)の手順Aに従って測定して、175mm3以下の耐摩耗性を示す、ステップと、
を含む、方法。 - 前記冷却が、103〜108K/秒の範囲である、請求項1に記載の方法。
- 冷却後の前記固化層は、一次樹枝状オーステナイト相を規定する前記元素と、0.1ミクロン未満のラメラ幅を有する初期レベルの樹枝状組織内層状ホウ化物相とを含み、加熱時に、前記ホウ化物相は固まり、前記一次相からの前記元素の約0.2ミクロン〜5ミクロンの範囲の直径を有する球状化ホウ化物相への拡散によって成長する、請求項1に記載の方法。
- 前記熱処理は、800〜1200℃の範囲の温度での30〜1000分間の加熱を含む、請求項1に記載の方法。
- 前記合金が、50.0〜76.0重量%のレベルのFe、0.5〜3.0重量%のB、15.0〜22.0重量%のCr、2.0〜5.0重量%のSi、及び5.0〜15.0重量%のNiを含む、請求項1に記載の方法。
- 前記合金は、55.5〜71.5重量%のFe;0.5〜3.0重量%のB;15.0〜20.0重量%のCr;2.0〜5.0重量%のSi;0.0〜0.5重量%のC;11.0〜15.0重量%のNiを含む、請求項1に記載の方法。
- 前記合金は、55.5〜75.2重量%のFe;0.5〜3.0重量%のB;17.0〜22.0重量%のCr;0.3〜3.0重量%のMn;2.0〜5.0重量%のSi;0.0〜0.5重量%のC;及び5.0〜10.0重量%のNiを含む、請求項1に記載の方法。
- 前記合金は、54.5〜69.5重量%のFe;0.5〜3.0重量%のB;16.5〜20.5重量%のCr;1.0〜2.5重量%のMn;2.0〜5.0重量%のSi;0.0〜0.5重量%のC;及び10.5〜14.0重量%のNiを含む、請求項1に記載の方法。
- 前記金属部品は、ポンプ又はポンプ部品、バルブ、モールド、ベアリング、切削工具、フィルター、又はスクリーンを含む、請求項1に記載の方法。
- 以下の元素:任意に0.3〜3.0重量%のMn及び0.5重量%までのレベルのCを含む、50.0〜76.0重量%のレベルのFe、0.5〜3.0重量%のB、15.0〜22.0重量%のCr、2.0〜5.0重量%のSi、及び5.0〜15.0重量%のNi、を含む層状形態の合金であって、前記合金は初めに、一次相と、0.1ミクロン未満のラメラ幅を有する樹枝状組織内層状ホウ化物相とを含み、
前記合金はさらに、前記層中に最初に存在する前記樹枝状組織内層状ホウ化物相から成長した、約0.2ミクロン〜5ミクロンの範囲の直径を有する二次球状化ホウ化物相を含み、
前記合金の層は、ASTM G65−04(2010)の手順Aに従って測定して、175mm3以下の耐摩耗性を示す、合金。 - ポンプ又はポンプ部品、バルブ、モールド、ベアリング、切削工具、フィルター又はスクリーンの形態である、請求項10に記載の合金。
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