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相圖熱力學(xué)計(jì)算在AM60-XGd鎂合金設(shè)計(jì)中的應(yīng)用
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國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展規(guī)劃(“973”計(jì)劃)(6133002B2)


Application of Phase Diagram Thermodynamics Calculation for AM60-XGd Alloy Design
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    以相圖熱力學(xué)為基礎(chǔ)，計(jì)算了Mg-6Al-XGd(質(zhì)量分?jǐn)?shù), %, 下同)鎂合金的垂直截面圖，200和500 ℃的等溫截面圖。根據(jù)相圖設(shè)計(jì)了不同Gd含量的AM60-XGd(X為0%, 0.8%, 1.2%, 1.6%和2.0%)鎂合金。并且對(duì)不同Gd含量的AM60鎂合金進(jìn)行了顯微組織觀察、力學(xué)性能測(cè)試。結(jié)果表明, AM60合金組織隨著稀土的加入得到細(xì)化。合金的抗拉強(qiáng)度和延伸率都得到顯著提高。當(dāng)合金中加入1.6%Gd時(shí), 合金表現(xiàn)出最好的顯微組織和力學(xué)性能

    Abstract:

    On the basis of the calculation results of Phase Diagram Thermodynamics, the phase diagrams of Mg-6Al-XGd alloy system including vertical section, isothermal section at 200 and 500 oC were calculated using Calphad software Pandat. Five kinds of AM60 alloys with different Gd additions (0wt%, 0.8wt%, 1.2wt%, 1.6wt% and 2.0wt%) were prepared and the microstructures and mechanical properties were investigated. The results show that the grain sizes of the tested alloys are greatly reduced by addition of Gd. The mechanical properties such as ultimate tensile strength (UTS) and elongation (EL) are also improved at room temperature. The alloy containing 1.6wt% Gd exhibits the finest microstructure and best mechanical properties

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張亞?wèn)|,李建平,郭永春,楊 忠,趙悅光.相圖熱力學(xué)計(jì)算在AM60-XGd鎂合金設(shè)計(jì)中的應(yīng)用[J].稀有金屬材料與工程,2010,39(4):668~671.[Zhang Yadong, Li Jianping, Guo Yongchun, Yang Zhong, Zhao Yueguang. Application of Phase Diagram Thermodynamics Calculation for AM60-XGd Alloy Design[J]. Rare Metal Materials and Engineering,2010,39(4):668~671.]
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  • 收稿日期:2009-04-30
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