Fig. 1. Microstructures of gravity casted titanium; (a) center (b) middle (c) side (×100).
Fig. 2. Optical micrographs of the heat-treated CP Ti samples for (a) 750°C, vertical (b) 750°C, horizontal (c) 850°C, vertical (d) 850°C, horizontal (e) 950°C, vertical (f) 950°C, horizontal (×50).
Fig. 3. Engineering strain-stress curves of the as-casted and heat-treated samples.
Fig. 4. Tensile properties of the as-casted and heat-treated samples.
Fig. 5. Vickers hardness variation of CP Ti with different heat treatments; (a) as-casted, (b) 750°C, (c) 850°C, and (d) 950°C.
Fig. 6. Schematic diamgran of new seamless tube manufacturing process.
Table 1. Chemical compositions of CP Ti (Grade 2)
References
- T. Y. Kim, K. R. Lim, Y. T. Lee, K. M. Cho and D-G. Lee : Kor. J. Mater. Res. 25 (2015) 636-641. https://doi.org/10.3740/MRSK.2015.25.11.636
- Z. Y. Zhang, H. Yang, H. Li, N. Ren and D. Wang : Mater. Sci. Eng. A 569 (2013) 96-105. https://doi.org/10.1016/j.msea.2013.01.055
- F. Song, H. Yang, H. Li, M. Zhan and G. Li : Chin. J. Aeronaut 26 (2013) 1336-1345. https://doi.org/10.1016/j.cja.2013.07.039
- H. M. Shalaby, H. Al-Mazeedi, H. Gopal and N. Tanoli : Eng. Fail. Anal 18 (2011) 1990-1997. https://doi.org/10.1016/j.engfailanal.2011.05.008
- C. S. Youn, Y. K. Park, J. H. Kim, S. C. Lee and D-G. Lee : J. of the Korean Society for Heat Treatment 30 (2017) 279-284. https://doi.org/10.12656/JKSHT.2017.30.6.279
- I. Weiss and S. L. Semiatin : Mater. Sci. Eng. A 263 (1999) 243-256. https://doi.org/10.1016/S0921-5093(98)01155-1
- S. Nemat-Nasser, W. G. Guo and J. Y. Cheng : Acta mater. 47 (1999) 3705-3720. https://doi.org/10.1016/S1359-6454(99)00203-7
- Y. J. Hwang, Y. K. Park, C. L. Kim, J. Y. Kim and DG. Lee : J. of the Korean Society for Heat Treatment 29 (2016) 220-226. https://doi.org/10.12656/jksht.2016.29.5.220
- C. L. Li, D-G. Lee, X. J. Mi, W. J. Ye, S. X. Hui and Y. T. Lee : J. Alloy. Compd. 549 (2013) 152-157. https://doi.org/10.1016/j.jallcom.2012.08.065
- M. S. J. Hashmi : J. Mater. Process. Technol 179 (2006) 5-10. https://doi.org/10.1016/j.jmatprotec.2006.03.104
- Y. B Lim and J. M. Yoon : J. of the Korean Society for Heat Treatment 30 (2017) 207-214. https://doi.org/10.12656/jksht.2017.30.5.207
Cited by
- 순수 타이타늄의 기계적 특성에 미치는 마찰 교반 용접 공정 조건의 영향 vol.32, pp.3, 2019, https://doi.org/10.12656/jksht.2019.32.3.124