热加工工艺
熱加工工藝
열가공공예
HOT WORKING TECHNOLOGY
2009年
18期
5-8
,共4页
复相分离法%最优化模型%改型IN718合金
複相分離法%最優化模型%改型IN718閤金
복상분리법%최우화모형%개형IN718합금
MPSM%optimized model%modified IN718 alloy
建立了用于计算γ′-Ni_3Al和γ′′-Ni_3Nb成分及含量的最优化数学模型,证明了通过复相分离法(Multiple Phases Separation Method,以下简称MPSM)计算两相成分及含量的可行性和准确性,利用MPSM法计算了调整(Al+Ti)/Nb比值后析出相的成分、含量及分配量,解释了调整该比值对改型IN718合金高温稳定性影响的原因.
建立瞭用于計算γ′-Ni_3Al和γ′′-Ni_3Nb成分及含量的最優化數學模型,證明瞭通過複相分離法(Multiple Phases Separation Method,以下簡稱MPSM)計算兩相成分及含量的可行性和準確性,利用MPSM法計算瞭調整(Al+Ti)/Nb比值後析齣相的成分、含量及分配量,解釋瞭調整該比值對改型IN718閤金高溫穩定性影響的原因.
건립료용우계산γ′-Ni_3Al화γ′′-Ni_3Nb성분급함량적최우화수학모형,증명료통과복상분리법(Multiple Phases Separation Method,이하간칭MPSM)계산량상성분급함량적가행성화준학성,이용MPSM법계산료조정(Al+Ti)/Nb비치후석출상적성분、함량급분배량,해석료조정해비치대개형IN718합금고온은정성영향적원인.
An optimized mathematical model was established to calculate the composition and volume fraction of -γ'-Ni_3Al and γ''-Ni_3Nb phases in IN718 alloy. The feasibility and accuracy of MPSM to calculate the composition and volume fraction of these two phases were also demonstrated. The composition, volume fraction and elemental partitioning fraction of the two precipitated phases after adjusting (Ti+Al) / Nb value in γ', γ" and γ mixture were calculated through the application of MPSM method. The reason why the adjustment could affect the high-temperature stability of modified IN718 alloys was also explained.
