二元钛合金硬度的理论计算及实验验证
本文选题：EET + 钛合金 ； 参考：《辽宁工业大学》2017年硕士论文
【摘要】：钛及钛合金由于具有比强度高、耐腐蚀、生物相容性好以及优秀的高温性能等优点,逐渐成为新兴的结构材料。本文以二元钛合金硬度为研究对象,以固体与分子经验电子理论(EET)为理论基础,计算了二元α、β钛合金以及平衡态的二元α+β、亚稳β钛合金的硬度,提出了合金硬度的理论计算方法,并设计相关实验进行验证。研究结果如下:基于EET,计算了二元α钛合金中相结构单元α-Ti和α-Ti-M以及相界面α-Ti//α-Ti-M的价电子结构,提出了二元α钛合金硬度的理论计算方法,并且,在Ti-xAl、Ti-xV和Ti-xZr三个合金体系中对计算方法进行验证,合金硬度的理论计算值与实验值的平均误差分别为4.67%、5.27%和3.85%;基于EET,计算了二元β钛合金中相结构单元β-Ti和β-Ti-M以及相界面β-Ti//β-Ti-M的价电子结构,提出了二元β钛合金硬度的理论计算方法,并且,在Ti-xFe、Ti-xV和Ti-xMo三个合金体系中对计算方法进行验证,Ti-xFe、Ti-xV和Ti-xMo系合金硬度的理论计算值和实验值的平均误差分别为2.72%、4.16%和2.3%;基于EET,计算了二元α+β钛合金平衡态组织中相结构单元α-Ti、α-Ti-M和β-Ti-M以及相界面α-Ti//α-Ti-M和α-Ti//β-Ti-M的价电子结构,提出了二元α+β钛合金平衡态硬度的理论计算方法,并且,用Ti-3Fe、Ti-6V和Ti-6Mo三种α+β钛合金硬度的理论计算值和实验值符合较好,平均误差为4.69%;基于EET,计算了二元亚稳β钛合金平衡态组织中相结构单元α-Ti、α-Ti-M、β-Ti和β-Ti-M以及相界面α-Ti//α-Ti-M、α-Ti//β-Ti和β-Ti//β-Ti-M的价电子结构,提出了二元亚稳β钛合金平衡态硬度的理论计算方法,并且,用Ti-7Fe、Ti-18V和Ti-11Mo三种亚稳β钛合金对计算方法进行验证,合金硬度的理论计算值与实验值之间的平均误差为7.57%。
[Abstract]:Titanium and titanium alloys have become new structural materials due to their high specific strength, corrosion resistance, good biocompatibility and excellent high temperature properties.In this paper, the hardness of binary 伪, 尾 titanium alloys and binary 伪 尾, metastable 尾 titanium alloys in equilibrium state are calculated on the basis of solid and molecular empirical electron theory.The theoretical calculation method of alloy hardness is put forward, and relevant experiments are designed to verify it.The results are as follows: based on EETs, the valence electron structures of phase structure units 伪 -Ti and 伪 -Ti-M and phase interface 伪 -Ti / 伪 -Ti-M in binary 伪 -Ti alloy have been calculated, and the theoretical calculation method of hardness of binary 伪 -Ti alloy has been put forward.The calculation method was verified in Ti-xAlnTi-xV and Ti-xZr alloy systems.On the basis of EETs, the valence electron structures of phase structure units 尾 -Ti and 尾 -Ti-M and phase interface 尾 -Ti / 尾 -Ti-M in binary 尾 -Ti alloy were calculated.A theoretical calculation method for the hardness of binary 尾 -titanium alloy is proposed.The average errors of the theoretical and experimental values of the hardness of Ti-xFeNTi-xV and Ti-xMo series alloys are 2.72% and 2.3%, respectively, and the phase junctions in the equilibrium microstructure of binary 伪 尾 titanium alloys are calculated based on the calculation method in the Ti-xFeCo Ti-xV and Ti-xMo alloy systems, which show that the average errors of the theoretical and experimental values are 2.72% and 2.3%, respectively, on the basis of the calculation of the hardness of Ti-xFeCo Ti-xV and Ti-xMo system alloys.The valence electron structures of 伪 -Ti, 伪 -Ti-M and 尾 -Ti-M and phase interface 伪 -Ti / 伪 -Ti-M and 伪 -Ti / 尾 -Ti-M are obtained.The theoretical calculation method of equilibrium hardness of binary 伪 尾 titanium alloy is put forward, and the theoretical and experimental values of the hardness of Ti 3FE Ti 6V and Ti-6Mo 伪 尾 Ti alloy are in good agreement with each other.Three kinds of metastable 尾 -titanium alloys, Ti-7Fe-18V and Ti-11Mo, were used to verify the calculation results. The average error between the calculated values and the experimental values was 7.57.
【学位授予单位】：辽宁工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG146.23
【参考文献】
相关期刊论文 前10条
1 葛鹏;吴欢;赵永庆;;Mo、V、Cr对钛合金β相的合金化效应[J];中国材料进展;2016年10期
2 王云飞;李云凯;孙川;朱灵波;缪勇;陈雪冰;;钢动静态强度计算的电子理论模型[J];物理学报;2014年12期
3 刘闯;刘伟东;屈华;刘海平;刘斯琦;;基于价电子理论的钛合金(α+β)/β相变温度计算及其验证[J];材料热处理学报;2013年10期
4 李淼泉;姚晓燕;;应用第一性原理研究置氢α钛晶体的电子结构和性能[J];稀有金属材料与工程;2013年05期
5 蒋淑英;李世春;;Ti-Fe系金属间化合物价电子结构与性能分析[J];稀有金属材料与工程;2011年01期
6 欧阳德来;鲁世强;崔霞;李鑫;黄旭;;TB6钛合金热变形诱导马氏体转变[J];中国有色金属学报;2010年12期
7 庞洪;张海龙;王希哲;吴凯;陈东;;包覆叠轧TA7钛合金薄板的组织与力学性能[J];中国有色金属学报;2010年S1期
8 李士凯;余魏;廖志谦;闫飞昊;王美姣;;ω相对Ti10V2Fe3Al合金性能的影响[J];中国有色金属学报;2010年S1期
9 林成;尹桂丽;刘志林;赵永庆;吴欢;葛鹏;;高强钛合金抗拉强度的理论计算[J];稀有金属材料与工程;2010年07期
10 ;Statistical values of valence electron structure parameters applied to research on phase transition temperature and eutectoid reaction of titanium alloy[J];Science in China(Series E:Technological Sciences);2008年11期
，本文编号：1737329
本文链接：https://www.wllwen.com/kejilunwen/jiagonggongyi/1737329.html
