研究了Ti-6Al-4V在800℃和1 000℃下固态渗碳化硼20 h后的渗层显微组织以及对硬度等的影响.结果表明:渗层在表面为致密分布的化合物层,其成分主要为TiC、TiB以及TiB2等硬质相,而在基体内部则形成沿晶界分布的板条状或等轴状的颗粒扩散层;表面碳化硼处理可以显著提高Ti-6Al-4V的表面硬度,由359 HV提高到了664 HV,并且可以得到良好的表面硬、芯部软的硬度梯度;断口形貌分析发现材料由韧性断裂转变成脆性断裂.
参考文献
| [1] | Gorynin, IV .Titanium alloys for marine application[J].Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing,1999(2):112-116. |
| [2] | Boyer R R .An overview on the use of titanium in the aerospace industry[J].Materials Science and Engineering A,1996,213:103-114. |
| [3] | Nwobu AIP.;West DRF.;Rawlings RD. .Nitride formation in titanium based substrates during laser surface melting in nitrogen-argon atmospheres[J].Acta materialia,1999(2):631-643. |
| [4] | Sobiecki JR.;Mankowski P.;Wierzchon T. .Increased wear and corrosion resistance of Ti(NCO) layers by annealing in a nitrogen plasma atmosphere[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,2002(2):105-111. |
| [5] | Wu S K;Lin H C;Lee C Y .Gas nitriding of an equiatomic TiNi shape-memory alloy.part Ⅰ:nitriding parameters and microstructure characterization[J].Surface and Coatings Technology,1999,113:17-24. |
| [6] | 赵斌,吴建生,孙坚,王飞.TiAl基合金高温气体渗氮[J].金属学报,2001(08):837-840. |
| [7] | Katayana S;Matsunawa A;Morimoto A.3ème colloque international sur le soudage et la fusionpar faisceau d'électrons et laser[J].Lyon France,1983(09):5-9. |
| [8] | G.WEN;S.B.LI;B.S.ZHANG .REACTION SYNTHESIS OF TiB_2-TiC COMPOSITES WITH ENHANCED TOUGHNESS[J].Acta materialia,2001(8):1463-1470. |
| [9] | Bhat BVR.;Subramanyam J.;Prasad VVB. .Preparation of Ti-TiB-TiC & Ti-TiB composites by in-situ reaction hot pressing[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):126-130. |
| [10] | Kaestner P.;He JW.;Rie KT.;Olfe J. .Improvement in the load-bearing capacity and adhesion of TiC coatings on TiAl6V4 by duplex treatment[J].Surface & Coatings Technology,2001(0):928-933. |
| [11] | Subramanian K;Nath AK;Kumar H;Ramachandra C;Ravindranathan SP;Selvan JS .Laser boronising of Ti-6Al-4V as a result of laser alloying with pre-placed BN[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1999(1/2):178-187. |
| [12] | Prakash B.;Ftikos C.;Celis JP. .Fretting wear behavior of PVD TiB2 coatings[J].Surface & Coatings Technology,2002(2/3):182-188. |
| [13] | 刘仲阳;王培录;孙官清 等.不同衬底对离子束辅助沉积TiCxNy膜力学性能影响的研究[J].机械工程材料,1998,22(05):17-20. |
| [14] | 程兰征;章燕豪.物理化学[M].上海:上海科学技术出版社,1988 |
| [15] | 胡赓祥;蔡珣.材料科学基础[M].上海:上海交通大学出版社,2002 |
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%