【摘 要】
：
The present study investigated the effect of intermediate annealing temperatures on the microstructure, mechanical properties and conductivity of Al-0.2Mg-0.35Si-0.3Ce wire rod (experienced hot extrus
【机 构】
：
College of Mechanics and Materials, Hohai University, China;School of Materials Science and Engineer
【出 处】
：
15th International Conference on Aluminium Alloys(ICAA15)(第十
论文部分内容阅读
The present study investigated the effect of intermediate annealing temperatures on the microstructure, mechanical properties and conductivity of Al-0.2Mg-0.35Si-0.3Ce wire rod (experienced hot extrusion (named as E), cold drawing (named as D), annealing (named as A) and cold drawing, i.e.EDAD).Four annealing temperatures (150℃, 200℃, 250℃, 300℃) were studied.Microstructure observation shows that no recrystallization occurs in the wire rod when annealed at 150 ℃ and 200 ℃, however, it occurs when the annealing temperature reaches 250 ℃.
其他文献
为研究粘贴钢板加固T型混凝土梁的受弯性能及影响因素,对8根不同钢板加固量、混凝土等级、配筋率和U型箍间距的T型混凝土梁进行试验研究.该加固方法能够很好的改善加固梁的受弯性能,裂缝和应变的发展均有所延缓,均表现为受拉钢筋及钢板屈服,受压区混凝土压碎的破坏形态.加固后的T型混凝土梁三个特征荷载均得到显著提高,其中增大钢板的加固量,三个特征荷载的提高幅值较大.U型箍间距增大未造成钢板锚固破坏,因此对特征
地震易损性分析是地震灾害分析的重要内容,可以比较全面地评价结构的抗震性能,因此,快速有效地获得结构的地震易损性非常重要.本文以一RC框架为对象,同时考虑结构材料和地震动的不确定性,以中心复合设计法建立试样样本对,用OpenSees软件建模并对样本进行非线性分析,建立了基于高维模型表达的结构近似模型,继而采用蒙特卡洛模拟得到结构易损性曲线;并且将结果与响应面法得到的易损性曲线进行比对.分析结果表明:
通过优化布设光纤光栅传感器、合理建立光纤光栅传感系统对实际小高层进行施工期安全监测,通过结构有限元模拟和实际监测,研究施工期混凝土强度、钢筋屈服强度的时变规律,分析恒活荷载及抗力的概率分布类型和主要统计参数,利用验算点法计算结构构件的可靠指标,并与编程计算结果进行对比.研究结果表明:监测值与理论计算值时变趋势一致,表明光纤光栅监测系统能很好的应用于实际工程的监测;可靠指标经对比发现手算和编程计算结
为研究表面内嵌GFRP筋加固后混凝土梁的受弯性能及影响因素,对7根不同混凝土强度等级、配筋率和附加锚固的T形梁进行静力试验研究.结果表明,此加固方法能够很好地改善加固梁的受弯性能,且主要影响加固梁的破坏阶段.有附加锚固加固梁发生弯曲破坏,开裂荷载没有提高,屈服荷载提高15.32％～35.87％,极限荷载提高40.07％～53.52％,刚度有所提高,位移、延性有所降低,裂缝与钢筋应变发展有所延缓.无
针对淄博市G309国道上宋家庄公铁立交桥挠度变形监测需求,本文提出基于张正友标定的DIC桥梁挠度监测方法.该方法使用CCD相机跟踪靶标位置变化,引入张正友方法标定CCD相机内外参数,并结合数字图像相关方法测量桥梁挠度.对比试验结果表明张正友标定的DIC方法具有较高精度.使用MATLAB编译宋家庄公铁立交桥挠度监测软件,并集成宋家庄公铁立交桥挠度监测系统.该系统可实现4通道CCD相机的图像预览、同步
Isothermal compression tests were performed for an as-extruded AA2099 Al-Li alloy by a thermal-mechanical simulator (Gleeble 3800) at temperatures ranging from 360 ℃ to 520 ℃ and strain rates ranging
The effects of final forging temperatures on deformability and structure evolution of high purity aluminum during multi-directional forging process were investigated.The results showed that increasing
The properties of Al-alloys extusions for automotive applications are largely controlled by the microstructure and crystallographic texture of the final extruded product.In this talk, the linkage betw
A quantitative approach to the determination of the phase composition in the Al-Mg(Cu)-Li alloys has been developed on the basis of the balance equations of chemical and phase compositions as well as
Strengthening of metals by plastic deformation is of universal interest, with the current focus being on deformation to high strains to produce materials with ultrafine structures and high strengths.T