利用光学显微镜、X射线衍射和扫描电镜等手段,研究了固态气体渗氢后氢元素对新型β医用钛合金Ti-25Nb-10Ta-1Zr-0.2Fe的相组成、微观组织和硬度的影响.研究结果表明,570℃置氢空冷,置氢量为0.2％(质量分数),合金发生共析反应βH→αH+δ.置氢后合金表面和内部显微组织出现差异:在合金表面,δ氢化物呈现针状,从晶界处生长,尺寸差异较大；在合金内部,氢化物δ呈细小针状,长度小于1μm,以α针为中心平行向外生长.置氢后合金硬度未增强.
参考文献
| [1] | 宋好武 .生物医用Ti-15Mo-3Zr-2Sn钛合金机械性能研究[D].天津:河北工业大学,2006. |
| [2] | Borowy K H;Kramer K H.On the properties of a new titanium alloy (TiAl5Fe2.5) as implant material[A].Oberursel:DGM,1995:1381. |
| [3] | Song Y;Xu D S et al.Theoretical study of the effects of alloys elements on the strength and modulus of β-type bio-titanium alloys[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1999,260(1-2):269. |
| [4] | 朱永锋,王立强,杨平,覃继宁,吕维洁,张获.β钛合金研究进展及其在骨科中的应用前景[J].生物骨科材料与临床研究,2011(04):25-28. |
| [5] | 廉才浩 .新型Ti-Nb-Ta-Zr系β医用钛合金的微观组织和性能研究[D].中南大学,2010. |
| [6] | 肖宏伟,赵敬伟,赵文娟,宋丹,杜刚,丁桦,王耀奇.置氢对Ti6Al4V合金微观组织和硬度的影响[J].稀有金属材料与工程,2008(10):1795-1799. |
| [7] | Xiao H Z .On the mechanism of hydride formation in α-Ti alloys[J].Scripta Metallurgica et Materialia,1992,27(01):571. |
| [8] | Luo L S et al.Formation of titanium hydride in Ti-6Al-4V alloy[J].Journal of Alloys and Compounds,2006,425(1-2):140. |
| [9] | 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. |
| [10] | Weimin Gao;Weiqi Li;Jin Zhou .Thermodynamics approach to the hydrogen diffusion and phase transformation in titanium particles[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2011(5):2523-2529. |
| [11] | Saurabh Kundu;Monojit Dutta;Suvankar Ganguly .Prediction of phase transformation and microstructure in steel using cellular automaton technique[J].Scripta materialia,2004(6):891-895. |
| [12] | Gerberich W W.Hydrogen effects in metals[A].,1981:731. |
| [13] | Alvarez A M et al.Hydrogen embrittlement of a metastable β-titanium alloy[J].Acta Materialia,2004,52(14):4161. |
| [14] | 赵敬伟 .热氢处理对钛合金组织演变及高温变形行为的研究[D].沈阳:东北大学,2009. |
| [15] | Kim T K;Baek J H;Choi B S et al.Characteristics of hydriding and hydrogen embrittlement of the Ti-AI-Zr alloy[J].Annals Nuclear Energy,2002,29(17):2041. |
| [16] | 张云琨 .氢、氮化和热氧化对钛合金性能影响的研究[D].中国科学院长春光学精密机械与物理研究所,2005. |
| [17] | 褚武扬.氢损伤和滞后断裂[M].北京:冶金工业出版社,1988 |
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%