新聞資訊
擠壓工藝對ME20M鎂合金組織和力學(xué)性能的影響
發(fā)布人：上海艾荔艾金屬材料有限公司bt990.com.cn
更新時(shí)間：2015-10-27
研究不同擠壓工藝條件對ME20M鎂合金組織和力學(xué)性能的影響。
擠壓工藝對ME20M鎂合金組織和力學(xué)性能的影響Effect of extrusion process on microstructure and?mechanical properties of ME20M magnesium alloy
研究不同擠壓工藝條件對ME20M鎂合金組織和力學(xué)性能的影響。結(jié)果表明：擠壓工藝參數(shù)的變化對ME20M的晶粒尺寸和組織均勻性具有較大的影響，存在主要第二相Mn單質(zhì)顆粒吸附Mg12Ce現(xiàn)象，其吸附量隨Mn顆粒分布位置的變化而變化，造成Mg12Ce分布不均，成為制約ME20M合金組織性能改善的主要因素之一。主要通過合理控溫、控速等擠壓工藝控制擠壓纖維組織的分布與數(shù)量，利用其強(qiáng)化作用實(shí)現(xiàn)抗拉強(qiáng)度超過250 MPa、伸長率超過10%型材的工業(yè)化生產(chǎn)。
The effect of various extrusion process conditions on the microstructure and mechanical properties of ME20M magnesium alloy was studied. The results show that the grain size and structure uniformity of ME20M magnesium alloy are greatly affected by the extrusion process parameters. Furthermore, Mg12Ce can be absorbed by Mn(the main second? phase), and the quantity of absorption varies according to the location of Mn particles. This will lead to non-uniform of Mg12Ce, which greatly restricts the development of the properties of ME20M magnesium alloy. By controlling extruding temperature and speed, the distribution and quantity of fibrous structure can be perfectly controlled. The profile that ultra tensile strength is above 250 MPa and elongation is above 10% can be realized by strengthening the effect of fibrous structure in industry production.
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