快赢彩票财富热线:400-8741-988

banner2
诚信为本,市场永远在变,快赢彩票手机版-快赢彩票App_快赢彩票手机App下载的诚信永远不变

快赢彩票app产品导航

联系我们

地址:上海市泗泾工业园经济技术开发区九干路9号
电话:400-8741-988
传真:400-6942-966
邮箱:3167808320@qq.com

新闻资讯

当前位置:主页 > 新闻资讯 >

轧制变形对喷射沉积含Nd镁合金织构及LPSO相的影

腊月:快赢彩票网    发布时间:2017-12-13 点击量:
轧制变形对喷射沉积含Nd镁合金织构及LPSO相的影响EFFECTS OF ROLLING DEFORMATION ON TEXTURE AND LPSO PHASE OF SPRAY-DEPOSITED MAGNESIUM ALLOYS CONTAINING Nd
采用喷射沉积技术制备 Mg-9Al-3Zn-1Mn-6Ca-2Nd 合金沉积坯, 对其进行挤压预变形和轧制变形(温度 T= 350 ℃; 道次压下率 ε=20%, 25%, 30%). 利用 SEM, TEM 和 XRD研究二次变形对尺寸不对称挤压坯中织构演变及 LPSO相形成的影响. 结果表明: 镁合金板坯经 350 ℃和道次压下率为 20%轧制后, 在(Ca, Nd)Al2结构 C15 型 Laves 相基体形成 24R 结构 Mg-Nd-Zn 型 LPSO 相; 随着轧制变形程度(ε=20%, 25%, 30%)增大实现了形变织构的随机化, 纳米级 C15 粒子钉扎位错与亚晶引起的再结晶共同作用是导致基面织构(0002), 柱面织构{101-0}<0001>及锥面织构{101-2}全面启动的主要原因. 
Mg alloys have been applied widely as structural materials over the past decades, with low density, high specific strength, stiffness, specific elastic modulus, and high recycling rate. However, their features of poor ductility and formability at room temperature have limited their application due to hexagonal close-packed crystal structure with less independent slip systems. Grain refinement and texture randomization are two means to activate other slip systems. In this work, the billets of Mg-9Al-3Zn-1Mn-6Ca-2Nd alloy produced by spraying deposition method (the Osprey process) were studied in order to analyze the effect of rolling deformation at 350 ℃ and pass reduction ε=20%, 25% and 30% on texture and microstructure evolution of an extruded size-asymmetry Mg alloy by SEM, TEM and XRD. The results show that under the condition of reduction of ε=20% at 350 ℃, a long-period stacking ordered phase with 24R structure was formed in (Ca, Nd)Al2 phase (C15 Laves phase ). All of basal texture (0002), prismatic texture{101-0}<0001>, and pyramidal texture {101-2} were activated, with pole density level weakened while pass reduction increased(ε=20%, 25% and 30%), namely, texture randomization achieved in Mg alloy, with main causes of nanometer-sized dispersed C15 phase impeding dislocation movement and sub-cells inducing the process of recrystallization.  全文下载:

    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,脸书我们互动。

    For more information on the alloys and services that we supply,  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 , , Facebook and .