新闻资讯
2124铝合金蠕变时效的微结构与性能
发布人：上海艾荔艾金属材料有限公司www.shailiai.com
更新时间：2015-12-26
研究蠕变时效前预处理（15%预变形+100 ℃预时效5 h）对可热处理强化2124铝合金蠕变时效成形的影响。采用SEM分析、TEM分析以及测定电导率、维氏硬度和拉伸性能等手段，分析两种不同初始状态试样经过蠕变时效后的微结构和性能。
2124铝合金蠕变时效的微结构与性能Microstructure and properties of creep aged 2124 aluminum alloy
研究蠕变时效前预处理（15%预变形+100 ℃预时效5 h）对可热处理强化2124铝合金蠕变时效成形的影响。采用SEM分析、TEM分析以及测定电导率、维氏硬度和拉伸性能等手段，分析两种不同初始状态试样经过蠕变时效后的微结构和性能。结果表明：初始预处理降低了蠕变时效过程中蠕变初始阶段的蠕变伸长率，但增大了稳态蠕变阶段的蠕变速率；初始预处理对基体中粗大Fe、Si相有一定的破碎作用，蠕变时效过程中，粗大粒子在蠕变应力作用下进一步被破碎；预处理能够改善第二相的析出形态和分布，使析出相分布均匀；预处理试样的电导率比未预处理试样的电导率高，其硬度和强度也较高，但伸长率较低。
The effect of pre-treatment（15% pre-deformation +100 ℃ pre-aging for 5 h）on creep age forming of aluminum alloy 2124 sheets, which can be enhanced by heat treatment, was investigated. The microstructures and properties of two sheets with different pre-treatments were analysed by means of SEM, TEM and measuring the electrical conductivity, Vickers hardness and tensile performance. The results show that the pre-treatment reduces the elongation of the initial stage of creep, but increases the steady-state creep rate; the coarse Fe and Si second phase particles are crushed to certain degree by the pre-treatment, and such coarse particles are further broken down by the subsequent creep stress. The morphology and distribution of the precipitated second phase particles are also improved by pre-treatment. The pre-treated sample depicts higher electrical conductivity, hardness and strength but smaller elongation rate than the non-pre-treated one.
作为值得信赖的合作伙伴和高品质金属合金的半成品供应商，艾荔艾拥有完善的服务体系和专业的团队。在同客户交易的过程中，我们力求根据不同的应用需求将我们的产品做到精益求精。针对当前和未来的市场需求，艾荔艾致力于为客户提供最佳的金属材料解决方案。
AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
获取更多我们供应的合金和服务信息，请致电086-021-67660801或发电子邮件kefu@ailiaigroup.com联系我们，您也可以通过微博和微信和我们互动。
For more information on the alloys and services that we supply, call us at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on Weibo and Weixin.