【摘 要】
：
Effects of aging temperature and time on microstructure and superelasticity of Ti-7.5Nb-4Mo-2Sn (at %) biomedical alloys were investigated.The ingot of the
论文部分内容阅读
Effects of aging temperature and time on microstructure and superelasticity of Ti-7.5Nb-4Mo-2Sn (at %) biomedical alloys were investigated.The ingot of the alloy was fabricted by an arc melting method using pure Ti, Nb, Mo and Sn as raw materials.After severe cold-rolling, the plate was quenched at 800℃ for 1800 s and followed by aging at 500℃, 600℃ and 700℃ for 300 s, and for 60, 300, 600 and 1800 s at 600℃, then the air was cooled to room temperature.During ageing, α", α and ω phases were precipitated in the alloys.As aging temperature increasing, α", α and ω phases in the alloys decrease.With aging time prolonging, ω phases convert to α phases.The aging alloys exhibit good superelasticity with high σSIM and η due to the reinforcement of α and ω phases.
其他文献
By combining the basic device equations of MOSFET with the polarization retention characteristics of ferroelectric thin films, a misfit strain and temperatu
Using molecular dynamics simulations, the tensile deformation behavior for two types of sub-10 nm multilayer nanowires (NWs) have been investigated.For the
随着全球经济的快速发展，世界对石油的需求不断增加.当常规石油资源不能满足石油需求快速增长时，油砂作为其中的一个重要来源显示了巨大的潜力.我国的油砂资源量比较丰富，初
外场作用下的极化翻转是铁电薄膜及铁电器件工作的物理本质。本文基于朗道-金兹堡-德文希尔理论，建立了应变调控的铁电薄膜极化翻转动力学模型，推导出了极化翻转时间的解析
在稀薄氧压下，用电子束蒸发的方法在铝酸镧(LaAlO3)基片上沉积制备纳尺度的铜薄膜。基于超微量天平对沉积质量的精确测量，以及ICP-AES对薄膜中金属元素的准确分析，研究了基
本文采用电子束沉积制备YBCO超导薄膜,研究了不同预处理气氛对YBCO薄膜双轴织构、表面形貌及超导性能的影响.超导临界电流密度测试、X射线衍射(XRD)和扫描电镜(SEM)的结
In this study, we developed a general method to analytically tackle a kind of movable boundary problem from the viewpoint of energy variation.Having grouped
微小质量附着在碳纳米管表面会引起其固有谐振频率的变化。碳纳米管的超弹性和低密度特性使其特别适合用作纳米质量传感器用于检测单个原子或分子的质量。本文基于经典全
本文研究了基底曲率对于电润湿接触角的影响。首次通过理论方法得出球(凸、凹)面基底上的电润湿公式，给出曲率修正的Lippmann-Young方程，并提出曲率修正电润湿数。在微米及
为了研究单壁碳纳米管的在阶跃载荷作用下的动力屈曲，利用分子动力学方法，考察了不同长径比的碳纳米管的动力屈曲情况，发现不同长径比的碳纳米管会发生不同形式的动力屈曲。