利用光学显微镜、透射电镜和X射线衍射仪等研究了Ti-15-3合金在五种不同工艺轧制过程中组织的演变规律以及轧制和时效处理后的显微组织和力学性能.结果表明:采用三种单向冷轧工艺均可以将2.9 mm厚的合金板很好地轧制成厚度约为0.6 mm的板材,并且轧后其晶粒逐步细化到纳米尺度,最小尺寸达到19.1 nm;固溶态合金经过40%/道次-3道次的冷轧并于450℃时效4 h后,由于出现了双相纳米组织,使合金的抗拉强度达到1 562 MPa,比冷轧态的提高了45%.
参考文献
[1] | I.P. Semenova;G.I. Raab;L.R. Saitova .The effect of equal-channel angular pressing on the structure and mechanical behavior of Ti-6Al-4V alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):805-808. |
[2] | G.I. Raab;E.P. Soshnikov;R.Z. Valiev .Influence of temperature and hydrostatic pressure during equal-channel angular pressing on the microstructure of commercial-purity Ti[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):674-677. |
[3] | Vladimir V. Stolyarov;Y. Theodore Zhu;Igor V. Alexandrov .Grain refinement and properties of pure Ti processed by warm ECAP and cold rolling[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):43-50. |
[4] | Sergueeva A.V.;Stolyarov V.V. .ENHANCED SUPERPLASTICITY IN A Ti-6Al-4V ALLOY PROCESSED BY SEVERE PLASTIC DEFORMATION[J].Scripta materialia,2000(9):819-824. |
[5] | Stolyarov VV;Lowe TC;Islamgaliev RK;Valiev RZ;Zhu YT .Two step SPD processing of ultrafine-grained titanium[J].Nanostructured Materials,1999(7):947-954. |
[6] | 郝玉琳,杨锐.纳米高强Ti-Nb-Zr-Sn合金[J].金属学报,2005(11):1183-1189. |
[7] | Hao YL;Li SJ;Sun SY;Zheng CY;Hu QM;Yang R .Super-elastic titanium alloy with unstable plastic deformation[J].Applied physics letters,2005(9):1906-1-1906-3-0. |
[8] | Li SJ;Zhang YW;Sun BB;Hao YL;Yang R .Thermal stability and mechanical properties of nanostructured Ti-24Nb-4Zr-7.9Sn alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):101-108. |
[9] | Hao YL;Li SJ;Sun SY;Zheng CY;Yang R .Elastic deformation behaviour of Ti-24Nb-4Zr-7.9Sn for biomedical applications.[J].Acta biomaterialia,2007(2):277-286. |
[10] | Hao YL;Li SJ;Sun BB;Sui ML;Yang R .Ductile titanium alloy with low Poisson's ratio[J].Physical review letters,2007(21):6405-1-6405-4-0. |
[11] | 李萍,薛克敏,曹爱民.Ti-15-3合金再结晶组织的预测[J].合肥工业大学学报(自然科学版),2004(09):991-995. |
[12] | Valiev RZ.;Alexandrov IV.;Islamgaliev RK. .Bulk nanostructured materials from severe plastic deformation [Review][J].Progress in materials science,2000(2):103-189. |
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%