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擠壓比及不同Mn含量對(duì)Mg-10Gd-6Y-1.6Zn-xMn鎂合金組織性能的影響
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重慶大學(xué)材料科學(xué)與工程學(xué)院;國(guó)家鎂合金材料工程技術(shù)研究中心,重慶大學(xué)材料科學(xué)與工程學(xué)院,重慶大學(xué)材料科學(xué)與工程學(xué)院,重慶大學(xué)材料科學(xué)與工程學(xué)院

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TG146.2 2

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重慶大學(xué)中央高校基本科研業(yè)務(wù)費(fèi)(CDJZR13130036),國(guó)家自然科學(xué)基金(51474043)


Effects of Extrusion Ratio and Mn Contents on Microstructure and Properties of Mg-10Gd-6Y-1.6Zn-xMn Magnesium Alloy
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College of Materials Science and Engineering,Chongqing University;China;National Engineering Research Center for Magnesium Alloys;China,College of Materials Science and Engineering,Chongqing University,College of Materials Science and Engineering,Chongqing University,College of Materials Science and Engineering,Chongqing University

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    摘要:

    通過(guò)模鑄法制備了Mg-10Gd-6Y-1.6Zn-xMn (x=0.4, 0.8, 1.2, 1.6, 2.0, wt.%)系列鎂合金,研究了擠壓比及Mn含量對(duì)Mg-10Gd-6Y-1.6Zn-xMn鎂合金顯微組織及室溫力學(xué)性能的影響。研究結(jié)果表明：鑄態(tài)Mg-10Gd-6Y-1.6Zn-xMn合金經(jīng)熱擠壓后,合金中的長(zhǎng)周期堆垛有序(LPSO)結(jié)構(gòu)由亞穩(wěn)的18R結(jié)構(gòu)轉(zhuǎn)變?yōu)榉€(wěn)定的14H結(jié)構(gòu)。大擠壓比能夠顯著提高合金的室溫力學(xué)性能,當(dāng)Mn含量為0.8%時(shí),未時(shí)效態(tài)抗拉強(qiáng)度達(dá)到386MPa,斷后延伸率約為10%。

    Abstract:

    In this study, various amount of Mn elements (x=0.4, 0.8, 1.2, 1.6, 2.0, wt. %) was added to Mg-10Gd-6Y-1.6Zn alloys. We investigated the effect of Mn elements and extrusion ratio on the microstructures and mechanical properties of the alloys. The results show that in the hot extrusion Mg-10Gd-6Y-1.6Zn-xMn alloys, the metastable 18R structure turned into a stable 14H structure of the long period stacking ordered (LPSO) structures. Large extrusion ratio can significantly improve mechanical properties of the alloys at room temperature. When 0.8 wt.% Mn element was added to the alloy, its tensile strength of no-aged status is 386 MPa, and its elongation is about 10%.

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胡耀波,楊生偉,姚青山,潘復(fù)生.擠壓比及不同Mn含量對(duì)Mg-10Gd-6Y-1.6Zn-xMn鎂合金組織性能的影響[J].稀有金屬材料與工程,2017,46(1):135~142.[Hu Yaobo, Yang Shengwei, Yao Qingshan, Pan Fusheng. Effects of Extrusion Ratio and Mn Contents on Microstructure and Properties of Mg-10Gd-6Y-1.6Zn-xMn Magnesium Alloy[J]. Rare Metal Materials and Engineering,2017,46(1):135~142.]
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歷史
  • 收稿日期:2015-02-04
  • 最后修改日期:2015-07-20
  • 錄用日期:2015-10-13
  • 在線(xiàn)發(fā)布日期: 2017-03-16
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