采用热模拟实验方法,研究了Ti600钛合金置氢后的热塑性性能,确定了不同含氢量及工艺参数条件下的激活能.研究结果发现,氢含量对置氢Ti600钛合金的峰值应力具有明显影响,当氢含量小于0.2%(质量分数)时,由于此时氢元素对B相的稳定起主导作用,因此随氢含量的增加,峰值应力随之降低.当氢含量大于0.2%(质量分数)时,由于此时氢元素的固溶强化起主导作用,因此随氢含量的增加,峰值应力随之增加.在相同塑性性能的条件下,提高氢含量,可以降低Ti600钛合金的变形温度.根据热模拟实验数据,得到了Ti600钛合金在不同氢含量时的激活能及相关系数,确定了置氢Ti600钛合金的Arrhenius型本构方程.
参考文献
| [1] | Tal-Gutelmacher E;Eliezer D .High fugacity hydrogen effects at room temperature in titanium based alloys[J].Journal of Alloys and Compounds,2005,404-406:613. |
| [2] | Yokoyama K;Ogawa T;Asaoka K;Sakai J .Hydrogen absorption of titanium and nickel-titanium alloys during long-term immersion in neutral fluoride solution.[J].Journal of biomedical materials research, Part B. Applied biomaterials,2006(1):204-210. |
| [3] | Murzinova M A;Salishchev G A;Afonichev D D .Superplasticity of hydrosen-containing VT6 titanium alloy with a submicrocrystalline structure[J].Physics of Metals and Metallography,2007,104(02):195. |
| [4] | P.A. Sundaram;D.Basu;R.W. Steinbrech;P.J. Ennis;W.J. Quadakkers .Effect of hydrogen on the elastic modulus and hardness of gamma titanium aluminides[J].Scripta materialia,1999(8):839-845. |
| [5] | Lopes Suarez A;Rickards J;Trejo-Luna R .Mechanical and microstructural changes of Ti and Ti-6Al-4V alloy induced by the absorption and desorption of hydrogen[J].Journal of Alloys and Compounds,2008,457(1-2):216. |
| [6] | Miaoquan Li;Weifu Zhang .Effect of hydrogenation content on high temperature deformation behavior of Ti-6Al-4V alloy in isothermal compression[J].International journal of hydrogen energy,2008(11):2714-2720. |
| [7] | Li Zhonghua;Wang Qing;Sun Dongli .Characteristic of deformation of Ti-6Al-4V alloy with hydrogen at high temperature[J].Key Engineering Materials,2007,353-358:686. |
| [8] | Wang Q;Han X;Li Z H .Hydrogenation and its effect on behavior of hot deformation in Ti-6Al-4V alloy[J].Materials Forum,2005,29:318. |
| [9] | Sun D L;Li Z H;Han X;Wang Q .Influence of hydrogen on tensile property of Ti-6AI-4V[J].Key Engineering Materials,2005,297-300:1133. |
| [10] | Shan D B;Zong Y Y;Lu T F .Microstructural evolution and formation mechanism of FCC titanium hydride in Ti-6Al-4V-xH alloys[J].Journal of Alloys and Compounds,2007,427(1-2):229. |
| [11] | D.B. Shan;Y.Y. Zong;Y. Lv .The effect of hydrogen on the strengthening and softening of Ti-6Al-4V alloy[J].Scripta materialia,2008(6):449-452. |
| [12] | 苏彦庆,骆良顺,毕维升,丁宏升,郭景杰,贾均,傅恒志.置氢对Ti6Al4V合金室温组织的影响[J].材料科学与工艺,2005(01):103-107. |
| [13] | 孙中刚,侯红亮,李红,王耀奇,李晓华,李志强,周文龙.氢处理对TC4钛合金组织及室温变形性能的影响[J].中国有色金属学报,2008(05):789-793. |
| [14] | Jeoung H K;Semiatin S L;Chong S .Constitutive analysis of the high-temperature deformation mechanisms of Ti-6Al-4V alloy[J].Materials Science and Engineering A,2005,A394:355. |
| [15] | Scllars C M;Mctegart W J .On the mechanism of hot deformation[J].Acta Metallurgica,1966,14:1136. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%