2Sn相組成,Mg2Sn相在界面處產(chǎn)生。在制備溫度為570 ℃時(shí)彎曲強(qiáng)度最高,可達(dá)215 MPa。當(dāng)燒結(jié)溫度為590 ℃時(shí)鎂合金的耐腐蝕性能最好,其電化學(xué)的電極電位和腐蝕電流分別為-1.5218 V和1.9632×10-5 A/cm2,這主要是由于Mg2Sn在顆粒接合邊界的存在,對(duì)α-Mg起到保護(hù)作用。"/>

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Mg-8Sn系鎂合金SPS制備及其組織性能研究
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先進(jìn)鎂基材料山西省重點(diǎn)實(shí)驗(yàn)室,先進(jìn)鎂基材料山西省重點(diǎn)實(shí)驗(yàn)室,先進(jìn)鎂基材料山西省重點(diǎn)實(shí)驗(yàn)室,先進(jìn)鎂基材料山西省重點(diǎn)實(shí)驗(yàn)室

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國(guó)家自然科學(xué)基金資助(項(xiàng)目號(hào)51375328)


The research of the microstructure and properties ofMg-8Sn alloy prepared by SPS
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    摘要:

    基于Mg-8Sn系鎂合金具有較好的強(qiáng)度、耐腐蝕性和塑性加工性,本文采用放電等離子燒結(jié)方法(Spark plasma sintering：SPS)在530～590 ℃制備了Mg-8Sn-1Al-1Zn鎂合金,對(duì)鎂合金的微觀組織、物相、力學(xué)性能和耐腐蝕性能進(jìn)行了研究。結(jié)果表明：鎂合金的顯微組織由α-Mg和Mg2Sn相組成,Mg2Sn相在界面處產(chǎn)生。在制備溫度為570 ℃時(shí)彎曲強(qiáng)度最高,可達(dá)215 MPa。當(dāng)燒結(jié)溫度為590 ℃時(shí)鎂合金的耐腐蝕性能最好,其電化學(xué)的電極電位和腐蝕電流分別為-1.5218 V和1.9632×10-5 A/cm2,這主要是由于Mg2Sn在顆粒接合邊界的存在,對(duì)α-Mg起到保護(hù)作用。

    Abstract:

    Based on the better strength, corrosion resistance and plastic processing of Mg-8Sn alloy, Mg-8Sn alloy was prepared successfully in 530～590 ℃ by spark plasma sintering (SPS) in this paper. The microstructures, phases, mechanical properties and corrosion resistance were investigated. The research results showed that the microstructure consisted of α-Mg and Mg2Sn phases, while Mg2Sn was generated at the interface of Mg and Sn. The highest bending strengh of Mg-8Sn-1Zn-1Al was 215 MPa which was obtained at 570 ℃. The best corrosion resistance of Mg-8Sn-1Zn-1Al was obtained at 590 ℃, of which the corrosion potential and the corrosion current were respectively -1.5218 V, 1.9632×10-5 A/cm2. That was because Mg2Sn was existed at particles bonding interface, which had protective effects on α-Mg.

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劉芳芳,王文先,陳洪勝,張媛琦. Mg-8Sn系鎂合金SPS制備及其組織性能研究[J].稀有金屬材料與工程,2018,47(7):2159~2165.[liufangfang, wangwenxian, chenhongsheng, zhangyuanqi. The research of the microstructure and properties ofMg-8Sn alloy prepared by SPS[J]. Rare Metal Materials and Engineering,2018,47(7):2159~2165.]
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  • 收稿日期:2016-07-12
  • 最后修改日期:2016-09-14
  • 錄用日期:2016-10-18
  • 在線發(fā)布日期: 2018-10-10
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