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Preparation, microstructure, and microhardness of selective laser-melted W–3Ta sample

Published online by Cambridge University Press:  15 April 2020

Junfeng Li ,
Zhengying Wei ,
Bokang Zhou ,
Yunxiao Wu ,
Sheng-Gui Chen  and
Zhenzhong Sun
Junfeng Li*
Affiliation:
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Zhengying Wei
Affiliation:
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Bokang Zhou
Affiliation:
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Yunxiao Wu
Affiliation:
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Sheng-Gui Chen
Affiliation:
School of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808, China
Zhenzhong Sun
Affiliation:
School of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808, China
*
a)Address all correspondence to this author. e-mail: xjljf2014@stu.xjtu.edu.cn
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Abstract

Tungsten (W) alloy is of difficulty in processing for conventional way because of its high melting point. Here, W alloy sample with the addition of 3 wt% Ta was prepared by selective laser melting. The influence of volumetric energy density (VED) on the surface morphology and the relative density was discussed, and microstructure, phase composition, and microhardness were investigated. The results show that a smooth surface and high relative density (95.79%) can be obtained under optimal VED. The W–Ta substitutional solid solution formed because of the replacement of Ta atom. There are strip and block fine grains in the W–3Ta sample with no significant texture. In addition, subgrain structure with a size of around 1 μm formed inside the strip grain, owing to the large thermal gradient and extremely fast cooling rate. Finally, the W–3Ta alloy shows higher microhardness than that obtained by traditional methods.

Keywords

morphologymicrostructuredensification
Type
Article
Information
Journal of Materials Research , Volume 35 , Issue 15: Focus Issue: Additive Manufacturing of Metals: Complex Microstructures and Architecture Design , 14 August 2020 , pp. 2016 - 2024
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Copyright
Copyright © Materials Research Society 2020

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References

Brooks, J.N., El-Guebaly, L., Hassanein, A., and Sizyuk, T.: Plasma-facing material alternatives to tungsten. Nucl. Fusion 55, 043002 (2015).10.1088/0029-5515/55/4/043002CrossRefGoogle Scholar
Philipps, V.: Tungsten as material for plasma-facing components in fusion devices. J. Nucl. Mater. 415, S2–S9 (2011).CrossRefGoogle Scholar
Choi, J., Sung, H.M., Roh, K.B., Hong, S.H., Kim, G.H., and Han, H.N.: Fabrication of sintered tungsten by spark plasma sintering and investigation of thermal stability. Int. J. Refract. Metals Hard Mater. 69, 164–169 (2017).CrossRefGoogle Scholar
Senthilnathan, N., Annamalai, A.R., and Venkatachalam, G.: Activated sintering of tungsten alloys through conventional and spark plasma sintering process. Mater. Manuf. Process. 32, 1861–1868 (2017).10.1080/10426914.2017.1328109CrossRefGoogle Scholar
Yap, C.Y., Chua, C.K., Dong, Z.L., Liu, Z.H., Zhang, D.Q., Loh, L.E., and Sing, S.L.: Review of selective laser melting: Materials and applications. Appl. Phys. Rev. 2, 041101 (2015).CrossRefGoogle Scholar
Vilardell, A.M., Takezawa, A., du Plessis, A., Takata, N., Krakhmalev, P., Kobashi, M., and Yadroitsev, I.: Topology optimization and characterization of Ti6Al4V ELI cellular lattice structures by laser powder bed fusion for biomedical applications. Mater. Sci. Eng., A 766, 138330 (2019).CrossRefGoogle Scholar
Wauthle, R., Van Der Stok, J., Yavari, S.A., Van Humbeeck, J., Kruth, J.P., Zadpoor, A.A., Weinans, H., Mulier, M., and Schrooten, J.: Additively manufactured porous tantalum implants. Acta Biomater. 14, 217–225 (2015).CrossRefGoogle ScholarPubMed
Deprez, K., Vandenberghe, S., Van Audenhaege, K., Van Vaerenbergh, J., and Van Holen, R.: Rapid additive manufacturing of MR compatible multipinhole collimators with selective laser melting of tungsten powder. Med. Phys 40, 012501 (2013).CrossRefGoogle ScholarPubMed
Braun, J., Kaserer, L., Stajkovic, J., Leitz, K.H., Tabernig, B., Singer, P., Leibenguth, P., Gspan, C., Kestler, H., and Leichtfried, G.: Molybdenum and tungsten manufactured by selective laser melting: Analysis of defect structure and solidification mechanisms. Int. J. Refract. Metals Hard Mater. 84, 104999 (2019).CrossRefGoogle Scholar
Faidel, D., Jonas, D., Natour, G., and Behr, W.: Investigation of the selective laser melting process with molybdenum powder. Addit. Manuf. 8, 88–94 (2015).Google Scholar
Leitz, K.H., Grohs, C., Singer, P., Tabernig, B., Plankensteiner, A., Kestler, H., and Sigl, L.S.: Fundamental analysis of the influence of powder characteristics in selective laser melting of molybdenum based on a multi-physical simulation model. Int. J. Refract. Metals Hard Mater. 72, 1–8 (2018).CrossRefGoogle Scholar
Wang, D., Yu, C., Ma, J., Liu, W., and Shen, Z.: Densification and crack suppression in selective laser melting of pure molybdenum. Mater. Des. 129, 44–52 (2017).CrossRefGoogle Scholar
Kaserer, L., Braun, J., Stajkovic, J., Leitz, K.H., Tabernig, B., Singer, P., Letofsky-Papst, I., Kestler, H., and Leichtfried, G.: Fully dense and crack free molybdenum manufactured by selective laser melting through alloying with carbon. Int. J. Refract. Metals Hard Mater. 84, 105000 (2019).10.1016/j.ijrmhm.2019.105000CrossRefGoogle Scholar
Zhou, L., Yuan, T., Li, R., Tang, J., Wang, G., and Guo, K.: Selective laser melting of pure tantalum: Densification, microstructure, and mechanical behaviors. Mater. Sci. Eng., A 707, 443–451 (2017).10.1016/j.msea.2017.09.083CrossRefGoogle Scholar
Enneti, R.K., Morgan, R., and Atre, S.V.: Effect of process parameters on the selective laser melting (SLM) of tungsten. Int. J. Refract. Metals Hard Mater. 71, 315–319 (2018).CrossRefGoogle Scholar
Zhang, D., Cai, Q., and Liu, J.: Formation of nanocrystalline tungsten by selective laser melting of tungsten powder. Mater. Manuf. Process. 27, 1267–1270 (2012).CrossRefGoogle Scholar
Zhou, X., Liu, X., Zhang, D., Shen, Z., and Liu, W.: Balling phenomena in selective laser melted tungsten. J. Mater. Process. Technol. 222, 33–42 (2015).CrossRefGoogle Scholar
Tan, C., Zhou, K., Ma, W., Attard, B., Zhang, P., and Kuang, T.: Selective laser melting of high-performance pure tungsten: Parameter design, densification behavior, and mechanical properties. Sci. Technol. Adv. Mater. 19, 370–380 (2018).CrossRefGoogle ScholarPubMed
Wen, S., Wang, C., Zhou, Y., Duan, L., Wei, Q., Yang, S., and Shi, Y.: High-density tungsten fabricated by selective laser melting: Densification, microstructure, mechanical, and thermal performance. Opt. Laser Technol. 116, 128–138 (2019).CrossRefGoogle Scholar
Guo, M., Gu, D., Xi, L., Du, L., Zhang, H., and Zhang, J.: Formation of scanning tracks during selective laser melting (SLM) of pure tungsten powder: Morphology, geometric features, and forming mechanisms. Int. J. Refract. Metals Hard Mater. 79, 37–46 (2019).CrossRefGoogle Scholar
Guo, M., Gu, D., Xi, L., Zhang, H., Zhang, J., Yang, J., and Wang, R.: Selective laser melting additive manufacturing of pure tungsten: Role of volumetric energy density on densification, microstructure, and mechanical properties. Int. J. Refract. Metals Hard Mater. 84, 105025 (2019).CrossRefGoogle Scholar
Sidambe, A.T., Tian, Y., Prangnell, P.B., and Fox, P.: Effect of processing parameters on the densification, microstructure and crystallographic texture during the laser powder bed fusion of pure tungsten. Int. J. Refract. Metals Hard Mater. 78, 254–263 (2019).CrossRefGoogle Scholar
Wang, D., Yu, C., Zhou, X., Ma, J., Liu, W., and Shen, Z.: Dense pure tungsten fabricated by selective laser melting. Appl. Sci. 7, 430 (2017).CrossRefGoogle Scholar
Wang, D., Li, K., Yu, C., Ma, J., Liu, W., and Shen, Z.: Cracking behavior in additively manufactured pure tungsten. Acta Metall. Sin. 32, 127–135 (2019).10.1007/s40195-018-0752-2CrossRefGoogle Scholar
Müller, A.V., Schlick, G., Neu, R., Anstätt, C., Klimkait, T., Lee, J., Pascher, B., Schmitt, M., and Seidel, C.: Additive manufacturing of pure tungsten by means of selective laser beam melting with substrate preheating temperatures up to 1000 °C. Nucl. Mater. Energy 19, 184–188 (2019).CrossRefGoogle Scholar
Wang, D., Wang, Z., Li, K., Ma, J., Liu, W., and Shen, Z.: Cracking in laser additively manufactured W: Initiation mechanism and a suppression approach by alloying. Mater. Des. 162, 384–393 (2019).10.1016/j.matdes.2018.12.010CrossRefGoogle Scholar
Liu, J., Zhou, Y., Fan, Y., and Chen, X.: Effect of laser hatch style on densification behavior, microstructure, and tribological performance of aluminum alloys by selective laser melting. J. Mater. Res. 33, 1713–1722 (2018).10.1557/jmr.2018.166CrossRefGoogle Scholar
Tamura, S., Tokunaga, K., Yoshida, N., Taniguchi, M., Ezato, K., Sato, K., Suzuki, S., Akiba, M., Tsunekawa, Y., and Okumiya, M.: Damage process of high purity tungsten coatings by hydrogen beam heat loads. J. Nucl. Mater. 337, 1043–1047 (2005).CrossRefGoogle Scholar
Chong, X., Hu, M., Wu, P., Shan, Q., Jiang, Y., and Feng, J.: Tailoring the anisotropic mechanical properties of hexagonal M7X3 (M = Fe, Cr, W, Mo; X = C, B) by multialloying. Acta Mater. 169, 193–208 (2019).CrossRefGoogle Scholar
Hu, C., Xu, Y.X., Chen, L., Pei, F., and Du, Y.: Mechanical properties, thermal stability, and oxidation resistance of Ta-doped CrAlN coatings. Surf. Coat. Technol. 368, 25–32 (2019).CrossRefGoogle Scholar
Wang, Z., Yuan, Y., Arshad, K., Wang, J., Zhou, Z., Tang, J., and Lu, G.: Effects of tantalum concentration on the microstructures and mechanical properties of tungsten-tantalum alloys. Fusion Eng. Des. 125, 496–502 (2017).10.1016/j.fusengdes.2017.04.082CrossRefGoogle Scholar