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沉淀强化奥氏体合金
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  precipitate strengthened austenite alloys
     Discrete Variational Method (DVM) was adopted in the first principles calculation of hydrogen occupation between γ and γ′ in precipitate strengthened austenite alloys to analysis the mechanism of hydrogen embrittlement of them.
     本文针对沉淀强化奥氏体合金氢脆通常较单相奥氏体严重这一点,采用离散变分方法对氢在沉淀强化奥氏体合金中γ基体与γ′相之间占位进行了第一原理计算和分析。
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  “沉淀强化奥氏体合金”译为未确定词的双语例句
     Positron annihilation lifetime spectroscopy was used to study the occupying rule and action mechanism of hydrogen in a Fe-Ni base precipitation-strengthened austenitic alloy. Tensile tests, SEM and TEM were performed to investigate the influences of heat treatment and hot hydrogen charging on its microstructure and mechanical properties. Results showed that hydrogen charging increased vacancy clusters' concentration in solution treated alloy and improved its strength while slightly decreased its plasticity;
     采用正电子湮没寿命谱研究了氢在不同热处理状态的Fe-Ni基沉淀强化奥氏体合金中的占位规律和作用机制,结合拉伸实验、扫描电镜和透射电镜观察研究了热处理和热充氢对合金微观组织及力学性能的影响.结果表明:热充氢导致固溶态合金内部的空位团浓度升高,合金强度上升,塑性略有下降;
短句来源
  相似匹配句对
     Strengthening Anstenitic Heat Resistance Nodular Cast Iron by Multi-Component Alloy
     多元合金奥氏体耐热球铁的强化
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     Precipitation Strengthening and Dispersion Strengthening in the Alloying Rail Steels
     合金轨钢中的沉淀强化和弥散强化
短句来源
     Study on Heat Treatment Processes of G60 Austenitic Precipitation-Hardening Alloy
     G60奥氏体沉淀硬化合金热处理工艺研究
短句来源
     With Ce added,the alloys can be strengthened.
     添加Ce,强化合金
短句来源
     INFLUENCE OF AUSTENITE STRENGTHENING ON MARTENSITIC TRANSFORMATION IN Fe-Mn-C ALLOYS
     Fe-Mn-C合金奥氏体强化对马氏体相变的影响
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Discrete Variational Method (DVM) was adopted in the first principles calculation of hydrogen occupation between γ and γ′ in precipitate strengthened austenite alloys to analysis the mechanism of hydrogen embrittlement of them. It is indicated that hydrogen inclined to enter the octahedral interstitial site in the γ matrix instead of interstitial site of γ′ phase or γ-γ′ boundary when the misfit of γ/γ′ is in the common range of the γ′ strengthened austenite alloys and small variation of the misfit will not...

Discrete Variational Method (DVM) was adopted in the first principles calculation of hydrogen occupation between γ and γ′ in precipitate strengthened austenite alloys to analysis the mechanism of hydrogen embrittlement of them. It is indicated that hydrogen inclined to enter the octahedral interstitial site in the γ matrix instead of interstitial site of γ′ phase or γ-γ′ boundary when the misfit of γ/γ′ is in the common range of the γ′ strengthened austenite alloys and small variation of the misfit will not change the situation. Contrariwise, hydrogen is inclined to enter γ′ phase when there is strain to some extent, corresponding to the misfit is higher than that of 3.7% or the size of γ′ phase is big enough. Hydrogen in the γ′ phase causes the localization and asymmetry of the bond between metal atoms, which may induce the slip localization of γ′ phase and thus cause hydrogen embrittlement of alloys.

本文针对沉淀强化奥氏体合金氢脆通常较单相奥氏体严重这一点,采用离散变分方法对氢在沉淀强化奥氏体合金中γ基体与γ′相之间占位进行了第一原理计算和分析。结果表明,氢原子在一般沉淀强化合金的γ与γ′相错配度范围内不会偏聚在相界,而是倾向进入基体中,错配度的微小变化对氢的占位没有影响。只有错配度大于3.7%左右,相当于有一定应变的条件下,氢才会有进入γ′相的倾向。在形变过程中进入γ′相的氢使得γ基体与γ′相界面原子成键的方向性增强,从而影响合金的氢脆性能。

Positron annihilation lifetime spectroscopy was used to study the occupying rule and action mechanism of hydrogen in a Fe-Ni base precipitation-strengthened austenitic alloy. Tensile tests, SEM and TEM were performed to investigate the influences of heat treatment and hot hydrogen charging on its microstructure and mechanical properties. Results showed that hydrogen charging increased vacancy clusters' concentration in solution treated alloy and improved its strength while slightly decreased its plasticity;...

Positron annihilation lifetime spectroscopy was used to study the occupying rule and action mechanism of hydrogen in a Fe-Ni base precipitation-strengthened austenitic alloy. Tensile tests, SEM and TEM were performed to investigate the influences of heat treatment and hot hydrogen charging on its microstructure and mechanical properties. Results showed that hydrogen charging increased vacancy clusters' concentration in solution treated alloy and improved its strength while slightly decreased its plasticity; in peak aged alloy, hydrogen entered the grain boundaries with a little amount of carbides and inter-grain vacancy clusters rather than γ′/γ interface, resulting in an obvious drop of plasticity; overaging treatment made γ′ coarsening and γ′/γ interface became hydrogen traps, in addition, hydrogen also entranced the grain boundaries with interconnection carbides. Those two factors led to a dramatic drop of the alloy plasticity.

采用正电子湮没寿命谱研究了氢在不同热处理状态的Fe-Ni基沉淀强化奥氏体合金中的占位规律和作用机制,结合拉伸实验、扫描电镜和透射电镜观察研究了热处理和热充氢对合金微观组织及力学性能的影响.结果表明:热充氢导致固溶态合金内部的空位团浓度升高,合金强度上升,塑性略有下降;氢在峰值时效合金中不进入γ′/γ界面,而是主要进入含少量碳化物的晶界和晶内空位团,使合金塑性显著降低;过时效处理产生粗大γ′相,使γ′/γ界面成为氢陷阱,同时氢还进入存在连续碳化物的晶界,造成合金塑性的严重降低.

 
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