以Ti?6Al?4V合金和(TiB+La2O3)/Ti?6Al?4V 复合材料为研究对象，研究固态渗碳法对两种材料表面显微组织和硬度的影响规律。将包覆于石墨粉中的试样置于密封的石英管中，在1227 K下保温24 h，成功实现了两种材料表面渗碳处理。显微组织和物相分析结果表明，固态渗碳后基体中原位生成了TiC 增强体和Ti?C 固溶体，且扩散层中的等轴α-Ti 相的体积分数随试样深度增加呈明显降低趋势；硬度测试结果表明，两种材料渗碳表面的显微硬度与未处理材料相比都明显提高了约100%，随试样深度增加而变化的碳含量在渗碳试样中形成了约300μm 的硬化层。同时，固态渗碳对内部组织和硬度的影响很小，表明该方法是一种有效强化钛合金及其复合材料的表面处理方法。
Solid carburization was employed to improve the hardness of Ti?6Al?4V alloy and (TiB+La2O3)/Ti composite. The samples wrapped in graphite powder were placed in sealed quartz tubes, followed by solid carburization at 1227 K for 24 h. Microstructure and phase analysis indicated that TiC reinforcements and Ti?C solid solutions were introduced after solid carburization. Moreover, the volume fraction of equiaxedα-Ti phase in diffusion layer decreased obviously with increasing sample depth. Hardness testing results indicated that both the carburized surfaces performed significant improvement of about 100% in micro-hardness compared with untreated materials. The variation of carbon contents with increasing sample depth resulted in a hardened layer of 300 μm in the carburized samples. Meanwhile, slight influence on the internal microstructure and hardness indicated that solid carburization was an effective method in strengthening the surface of titanium alloy and titanium matrix composite.
参考文献
| [1] | Ren, B.;Miao, Q.;Liang, W.;Yao, Z.;Zhang, P..Characteristics of Mo-Cr duplex-alloyed layer on Ti_6Al_4V by double glow plasma surface metallurgy[J].Surface & Coatings Technology,2013Suppl.1(Suppl.1):S206-S209. |
| [2] | Wang, H.W.;Qi, J.Q.;Zou, C.M.;Zhu, D.D.;Wei, Z.J..High-temperature tensile strengths of in situ synthesized TiC/Ti-alloy composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2012:209-213. |
| [3] | S.C. Tjong;Yiu-Wing Mai.Processing-structure-property aspects of particulate- and whisker-reinforced titanium matrix composites[J].Composites science and technology,20083/4(3/4):583-601. |
| [4] | Junqiang Lu;Jining Qin;Yifei Chen.Superplasticity of coarse-grained (TiB + TiC)/Ti-6Al-4V composite[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20101/2(1/2):118-123. |
| [5] | G.WEN;S.B.LI;B.S.ZHANG.REACTION SYNTHESIS OF TiB_2-TiC COMPOSITES WITH ENHANCED TOUGHNESS[J].Acta materialia,20018(8):1463-1470. |
| [6] | Lu L.;Wang HY.;Lai MO..Synthesis of titanium diboride TiB2 and Ti-Al-B metal matrix composites[J].Journal of Materials Science,20001(1):241-248. |
| [7] | S. Rangarajan;P. B. Aswath;W. O. Soboyejo.Microstructure development and fracture of in-situ reinforced Ti-8.5Al-1B-1Si[J].Scripta materialia,19962(2):239-245. |
| [8] | Zhifeng Yang;Weijie Lu;Lin Zhao.Microstructure and mechanical property of in situ synthesized multiple-reinforced (TiB + TiC + La_2O_3)/Ti composites[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,20081/2(1/2):210-214. |
| [9] | L.J. Huang;S. Wang;L Geng;B. Kaveendran;H.X. Peng.Low volume fraction in situ (Ti_5Si_3 + Ti_2C)/Ti hybrid composites with network microstructure fabricated by reaction hot pressing of Ti-SiC system[J].Composites science and technology,2013Jun.(Jun.):23-28. |
| [10] | Liu, B.X.;Huang, L.J.;Geng, L.;Wang, B.;Cui, X.P.;Liu, C.;Wang, G.S..Microstructure and tensile behavior of novel laminated Ti-TiBw/Ti composites by reaction hot pressing[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2013:182-187. |
| [11] | Zhiyong He;Zhenxia Wang;Wenbo Wang;Ailan Fan;Zhong Xu.Surface modification of titanium alloy Ti6Al4V by plasma niobium alloying process[J].Surface & Coatings Technology,20079/11(9/11):5705-5709. |
| [12] | N. Tsuji;S. Tanaka;T. Takasugi.Evaluation of surface-modified Ti–6Al–4V alloy by combination of plasma-carburizing and deep-rolling[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20081/2(1/2):139-145. |
| [13] | Zhecheva A;Sha W;Malinov S;Long A.Enhancing the microstructure and properties of titanium alloys through nitriding and other surface engineering methods[J].Surface & Coatings Technology,20057(7):2192-2207. |
| [14] | 冯淑容;汤海波;张述泉;王华明.钛合金激光熔覆TiB-TiC增强TiNi-Ti2Ni金属间化合物复合涂层的组织和耐磨性[J].中国有色金属学报（英文版）,2012(7):1667-1673. |
| [15] | 李秀燕;唐宾;王鹤峰;叶娇荣.纯钛表面Zr-N等离子合金化[J].中国有色金属学报（英文版）,2013(6):1628-1632. |
| [16] | 洪翔;谭业发;王小龙;谭华;徐婷.氮气流量对TC11钛合金表面电火花原位反应沉积TiN强化层显微组织和摩擦学性能的影响[J].中国有色金属学报（英文版）,2015(10):3329-3338. |
| [17] | Taek-Soo Kim;Yong-Gwon Park;Myeong-Yong Wey.Characterization of Ti-6Al-4V alloy modified by plasma carburizing process[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20031/2(1/2):275-280. |
| [18] | 邢亚哲;姜超平;郝建民.Ti-6Al-4V合金表面的辉光等离子渗碳强化[J].稀有金属材料与工程,2013(6):1101-1104. |
| [19] | 姬寿长;李争显;杜继红;王少鹏;王宝云;黄春良;潘晓龙.Ti6Al4V合金表面无氢渗碳层分析[J].稀有金属材料与工程,2010(12):2152-2156. |
| [20] | LIU Xiao-ping;TIAN Wen-huai;GUO Chao-li;HE Zhi-yong;XU Zhong.Effect of carbon on tribological property of plasma carburized TiAl based alloy[J].中国有色金属学会会刊（英文版）,2006(z3):2026-2029. |
| [21] | N. Makuch;M. Kulka;P. Dziarski;D. Przestacki.Laser surface alloying of commercially pure titanium with boron and carbon[J].Optics and Lasers in Engineering,2014Jun.(Jun.):64-81. |
| [22] | ZHANG Ke-min;ZOU Jian-xin;LI Jun;YU Zhi-shui;WANG Hui-ping.Surface modification of TC4 Ti alloy by laser cladding with TiC+Ti powders[J].中国有色金属学报（英文版）,2010(11):2192-2197. |
| [23] | Liu XY;Chu PK;Ding CX.Surface modification of titanium, titanium alloys, and related materials for biomedical applications[J].Materials Science & Engineering, R. Reports: A Review Journal,20043/4(3/4):49-121. |
| [24] | HA Rastegari;S. Asgari;S.M. Abbasi.Producing Ti-6Al-4V/TiC composite with good ductility by vacuum induction melting furnace and hot rolling process[J].Materials & design,201110(10):5010-5014. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%