JP5623025B2 - 過酷な環境の応用のための傾斜分布熱膨張係数を有する積み重ね複合構造 - Google Patents
過酷な環境の応用のための傾斜分布熱膨張係数を有する積み重ね複合構造 Download PDFInfo
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Description
プレフォームを強化し、
CTEの傾斜分布され一体化された複合ビレットを生成するため強化されたプレフォームを熱処理し、
第1のCTEを有する第1の構造コンポーネントへ取付けるための第1の表面と、第2のCTEを有する第2の構造コンポーネントへ取付けるための第2の表面とを提供するためにビレットを成形するステップを含んでいる傾斜分布熱膨張係数(CTE)を有する一体化された複合インターフェースを生成する方法。
プレフォームを強化し、
CTEの傾斜分布されたニアネットシェイプのコンポーネントを生成するために強化されたプレフォームを熱処理し、
第1のCTEを有する第1の構造コンポーネントへ取付けるための第1の表面と、第2のCTEを有する第2の構造コンポーネントへ取付けるための第2の表面とを提供するためにコンポーネントを成形するステップを含んでいる傾斜分布熱膨張係数(CTE)を有する一体化された複合インターフェースを生成する方法。
第1の部材と第2の部材を取付けるための過酷な環境応用を識別し、
CTEの傾斜分布した複合物から第1の部材と第2の部材への取付け方法の決定を含んでいるCTEの傾斜分布した複合物の接続コンポーネント設計を決定し、
構造により必要とされるCTEの不整合の適合のレベルを決定するために各部材の温度依存CTE特性を評価し、運用期間中に遭遇する加熱/冷却温度勾配のレベルを評価し、アセンブリの熱機械的負荷状態を解析する処理を含んでいる熱機械解析を行い、
傾斜分布CTE複合物の材料選択を行い、
積み重ね製造技術を選択し、
CTE複合物の層の局部的なインターフェース設計を決定し、
選択された材料、製造技術、局部的なインターフェース設計を使用して異なるCTEの材料の層を使用しているCTEの傾斜分布された部材を積み重ね、
二次処理を行い、
第1の部材と第2の部材をCTEの傾斜分布コンポーネントに組み立てるステップを含んでいる方法。
第1の隣接層の材料の約75%と第2の隣接層の材料の約25%の材料組成を有する第1の中間層と、第1の隣接層の材料の約50%と第2の隣接層の材料の約50%の材料組成を有する第2の中間層と、第1の隣接層の材料の約25%と第2の隣接層の材料の約75%の材料組成を有する第3の中間層とを有する中間層を第1及び第2の隣接層間に設けるステップを含んでいる16の方法。
CTEの傾斜分布されたデレクトリビレットを生成するために粉末冶金処理を使用し、
出発コンポーネントを形成するためにビレットを機械加工し、
出発コンポーネントをニアネットシェイプに熱間圧延し、
第1の部材と第2の部材にボルトで取付けるための要求に適合するように最終特徴を化学機械加工するステップを含んでいる15の方法。
2つの隣接層の各材料の複数の交番層を具備する各2つの隣接層間に中間層を設けるステップを含んでいる18の方法。
インコネル718超合金フランジと、
ノズルとフランジを相互接続し、傾斜分布熱膨張係数(CTE)を有する一体化された複合インターフェースとを具備しており、前記インターフェースは、
所望のCTEの傾斜分布に対応する傾斜分布化学的性質を有するビレットを粉末治金処理し、
CTEの傾斜分布ビレットから出発コンポーネントを機械加工し、
さらに強化するためにコンポーネントを熱間リング圧延し、
複合ノズルへ結合するためのボルトインターフェースを機械加工し、
フランジに結合するためのボルトインターフェースを機械加工することにより形成されている航空機エンジン構造。
非常に異なるCTEを有する部材を相互接続するために傾斜分布熱膨張係数を有する複合構造の生成は図1に示されているようなプロセスを使用する。応用と環境がステップ102で決定され、部材間の転移コンポーネントはステップ104で設計される。このような応用の幾つかの特別な例を次に詳細に説明する。熱機械的解析はステップ106で必要とされるCTE適合のレベルを理解するために行われる。適切なコンポーネント性能に必要な介在材料のタイプと数が傾斜分布CTE複合物についてステップ108で選択される。設計されたCTEの傾斜分布された層化複合物の適切な積み重ね方法の決定がステップ110で行われる。任意の付加的な必要なCTE適合特性を有する局部インターフェースがステップ112で設計される。CTE層の主な製造はその後選択された製造方法によりステップ114で行われる。仕上げられたコンポーネントが設計されたように生成されるよう、ステップ116でCTEの傾斜分布された層化複合物において二次処理が行われる。その後ステップ118で、生成されたCTEの傾斜分布コンポーネントとその他の部材の最終的な組立てが行われる。
Claims (9)
- 第1の熱膨張係数(CTE)を有する第1の構造コンポーネントと、第2のCTEを有する第2の構造コンポーネントとを接続するための、傾斜分布CTEを有する一体化された複合インターフェースの生成方法であって、
傾斜分布CTEの複数の層を選択するステップと、
層間の局部的なインターフェース設計を決定するステップと、
CTEの傾斜分布され一体化された複合物を形成するために層を積み重ねるステップと、
第1の構造コンポーネントへ取付けるための第1の表面と、第2の構造コンポーネントへ取付けるための第2の表面とを生成するように一体化された複合物を処理するステップと
を含み、層の積み重ねステップは金属付着ステップを含み、金属付着ステップは粉末供給装置を有するプラズマスプレートーチによる溶射処理を含んでおり、さらに、
回転マンドレルを設け、
取付けリングを生成するためにマンドレルに対して予め定められた軸層の材料組成物を与え、
軸層間にスカーフ継ぎされたインターフェースを生成するために材料の供給を調節するステップを含んでいる方法。 - 局部的なインターフェース設計を決定するステップは、第1の隣接層と第2の隣接層の間に、第1の隣接層の材料の約75%と第2の隣接層の材料の約25%の材料組成を有する第1の中間層と、第1の隣接層の材料の約50%と第2の隣接層の材料の約50%の材料組成を有する第2の中間層と、第1の隣接層の材料の約25%と第2の隣接層の材料の約75%の材料組成を有する第3の中間層とを設ける、請求項1に記載の方法。
- 局部的なインターフェース設計を決定するステップは、第1の隣接層と第2の隣接層の間に、第1の隣接層の材料の層と第2の隣接層の材料の層とが交番する複数の中間層を設ける、請求項1に記載の方法。
- 複数の層を選択するステップはコバール、42アロイ、48アロイ、15−5PH、インコネル718のグループからの層の選択を含んでいる請求項1記載の方法。
- 層の積み重ねステップは傾斜分布CTEビレットを提供し、処理ステップはさらに層間に直交インターフェースを有する条帯を提供するためにビレットを機械加工するステップを含んでいる請求項1記載の方法。
- 層の積み重ねステップは傾斜分布CTEビレットを提供し、処理ステップはさらに層間の傾斜されたインターフェースを有する条帯に与えるようにビレットを機械加工するステップを含んでいる請求項1記載の方法。
- 層の積み重ねステップは傾斜分布CTEビレットを提供し、処理ステップはさらに、
プレフォームを生成するようにビレットを機械加工し、
プレフォームを拡張し、
ニアネットシェイプの取付けリングを形成するように拡張された形状を圧延するステップを含んでいる請求項1記載の方法。 - さらに、CTEの傾斜分布され一体化された複合物を熱間等静圧圧縮(HIP)するステップを含んでいる請求項1記載の方法。
- 金属付着ステップはさらに、レーザを使用するニアネットシェイプ製造、レーザ焼結、溶射成形または熱溶射成形のセットから金属付着プロセスを選択するステップを含んでいる請求項1記載の方法。
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US12/110,595 US8512808B2 (en) | 2008-04-28 | 2008-04-28 | Built-up composite structures with a graded coefficient of thermal expansion for extreme environment applications |
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US20130305727A1 (en) | 2013-11-21 |
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US8512808B2 (en) | 2013-08-20 |
PT2113583E (pt) | 2015-08-25 |
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