| 钛合金熔体活度计算及合金与铸型的界面反应 |
| |
| 引用本文： | 丁宏升,傅恒志,贾均,郭景杰,李金山.钛合金熔体活度计算及合金与铸型的界面反应[J].材料科学与工艺,2001,9(2):130-134. |
| |
| 作者姓名： | 丁宏升 傅恒志 贾均 郭景杰 李金山 |
| |
| 作者单位： | 1. 哈尔滨工业大学
2. 西北工业大学 |
| |
| 摘 要： | 在深入分析Miedema合金生成热模型的基础之上，运用化学反应和溶液热力学理论对钛熔体中溶质元素的活度系数进行了理论计算，进而评述了钛合金熔体的化学活性变化程度，通过对Ti6A14V合金和Ti15V3Cr3Sn3Al合金与所选择的耐火氧化物类铸材料的实验研究结果分析，可以认为添加合金元素以后钛熔体的化学活泼性并没有发生实质性的改变，由于熔体仍然具有相当高的化学活性，导致合金与铸型之间的界面反应是严重的，计算与实验结果吻合，同时所进行的理论分析和实验研究对于铸用高稳定性铸型材料的选择，铸优质的钛合金铸件具有一定的理论和实际指导作用。
|
| 关 键 词： | 钛合金 界面反应 铸型 热力学 活度计算 生成热模型 铸造 |
| 文章编号： | 1005-0299(2001)02-0130-05 |
| 修稿时间： | 2000年12月16日 |
Calculation of activity of molten titanium alloys and interface reaction with mold materials |
| |
| DING Hong sheng ,FU Heng zhi ,JIA Jun ,GUO Jing jie ,LI Jin shan.Calculation of activity of molten titanium alloys and interface reaction with mold materials[J].Materials Science and Technology,2001,9(2):130-134. |
| |
| Authors: | DING Hong sheng FU Heng zhi JIA Jun GUO Jing jie LI Jin shan |
| |
| Affiliation: | DING Hong sheng 1,2,FU Heng zhi 2,JIA Jun 1,GUO Jing jie 1,LI Jin shan 2 |
| |
| Abstract: | On basis of the Miedema model on formation heat of alloys and the thermodynamics of chemical reactions and solutions, the activity of molten titanium alloys was calculated. As a comparison, the interface reactivity of some refractory oxides with Ti6Al4V and Ti15V3Cr3Sn3Al alloys has been also studied experimentally. The results show that chemical reactivity of molten titanium has not been changed due to the addition of alloying elements. The selected molding materials have contaminated the candidate alloys seriously, and the experiment is fitting well with the calculated results. Furthermore, considering the high chemical reactivity of molten titanium alloy, the above evaluations can provide some instructions for choosing mold materials for titanium castings. |
| |
| Keywords: | titanium alloy interface reaction mould thermodynamic |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
