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Sinter-hardening with concurrent improved plasticity in iron alloys induced by spark plasma sintering

Published online by Cambridge University Press:  01 May 2014

Chao Yang ,
Tian Wei ,
Xuebing Dong ,
Yuhua Li ,
Shengguan Qu  and
Xiaoqiang Li
Chao Yang*
Affiliation:
School of Mechanical & Automotive Engineering, National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
Tian Wei
Affiliation:
School of Mechanical & Automotive Engineering, National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
Xuebing Dong
Affiliation:
School of Mechanical & Automotive Engineering, National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
Yuhua Li
Affiliation:
School of Mechanical & Automotive Engineering, National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
Shengguan Qu
Affiliation:
School of Mechanical & Automotive Engineering, National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
Xiaoqiang Li
Affiliation:
School of Mechanical & Automotive Engineering, National Engineering Research Center of Near-net-shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640, People's Republic of China
*
a)Address all correspondence to this author. e-mail: cyang@scut.edu.cn
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Abstract

We report on the occurrence of sinter-hardening with concurrent improved plasticity in fine-grained Fe79.3Mo4.5P8.1C6.75B1.35 bulk alloys fabricated by spark plasma sintering (SPS) of metallic glass composite powder. When the sintering temperature is higher than the austenite transformation temperature, the as-fabricated bulk alloys are composed of expected wattle martensite plus Fe3P, Fe7C3, and Fe3Mo3C. Meanwhile, the martensite-containing bulk alloys exhibit increased hardness, fracture strength as well as concurrent improved plasticity. The fracture stress and strain of the martensite-containing bulk alloys are as high as 2573 MPa and 8.6%, respectively. The formation of the martensite microstructure is attributed to that high sintering temperature leads to the austenitization transformation and consequently formed austenite partially transforms into martensite under rapid cooling rate provided by SPS system. The results obtained provide insight into fabrication of iron alloys with good mechanical property by powder metallurgy.

Keywords

iron alloysfine-grained materialssinter-hardeningspark plasma sinteringcrystallization
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 8 , 28 April 2014 , pp. 981 - 988
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

Wei, Q., Kecskes, L., Jiao, T., Hartwig, K.T., Ramesh, K.T., and Ma, E.: Adiabatic shear banding in ultrafine-grained Fe processed by severe plastic deformation. Acta Mater. 52(7), 1859–1869 (2004).CrossRefGoogle Scholar
Han, B.Q., Mohamed, F.A., and Lavernia, E.J.: Mechanical properties of iron processed by severe plastic deformation. Metall. Mater. Trans. A 34(1), 71–83 (2003).Google Scholar
Srinivasarao, B., Oh-ishi, K., Ohkubo, T., Mukali, T., and Hono, K.: Synthesis of high-strength bimodally grained iron by mechanical alloying and spark plasma sintering. Scripta Mater. 58(9), 759–762 (2008).Google Scholar
Zhang, H.W., Gopalan, R., Mukai, T., and Hono, K.: Fabrication of bulk nanocrystalline Fe–C alloy by spark plasma sintering of mechanically milled powder. Scripta Mater. 53(7), 863–868 (2005).Google Scholar
Yang, C., Wei, T., Yao, Y.P., Li, Y.H., Qu, S.G., and Zhang, L.C.: Bulk multimodal-grained irons with large plasticity fabricated by spark plasma sintering. Mater. Sci. Eng., A 591, 54–58 (2014).Google Scholar
Guo, S.F., Liu, L., Li, N., and Li, Y.: Fe-based bulk metallic glass matrix composite with large plasticity. Scripta Mater. 62(6), 329–332 (2010).CrossRefGoogle Scholar
Li, Y.Y., Yang, C., Chen, W.P., Li, X.Q., and Qu, S.G.: Ultrafine-grained Ti66Nb13Cu8Ni6.8Al6.2 composites fabricated by spark plasma sintering and crystallization of amorphous phase. J. Mater. Res. 24(6), 2118–2122 (2009).Google Scholar
Li, Y.Y., Yang, C., Qu, S.G., Li, X.Q., and Chen, W.P.: Nucleation and growth mechanism of crystalline phase for fabrication of ultrafine-grained Ti66Nb13Cu8Ni6.8Al6.2 composites by spark plasma sintering and crystallization of amorphous phase. Mater. Sci. Eng., A 528(1), 486–493 (2010).Google Scholar
Vallauri, D., Atías, A., and Chrysanthou, A.: TiC-TiB2 composites: A review of phase relationships, processing and properties. J. Euro. Ceram. Soc. 28, 1697–1713 (2008).CrossRefGoogle Scholar
James, W.B.: What is Sinter-Hardening. Advances in Powder Metallurgy and Particulate Materials (Metal Powder Industries Federation, Princeton, NJ, 1998).Google Scholar
Capus, J.M.: Sinter-hardening offers high strength at lower cost. Metal Powder Report 52(9), 17–18 (1997).Google Scholar
Marucci, M.L., Fillari, G., King, P., and Narasimhan, K.S.S.: Sintering a path to cost-effective hardened parts. Metal Powder Report 60, 42–46 (2005).Google Scholar
Xiao, Z.Y., Ke, M.Y., Fang, L., Shao, M., and Li, Y.Y.: Die wall lubricated warm compacting and sintering behaviors of pre-mixed Fe-Ni-Cu-Mo-C powders. J. Mater. Process. Tech. 209, 4527–4530 (2009).Google Scholar
Li, Y.Y., Yang, C., Wei, T., Li, X.Q., and Qu, S.G.: Ductile fine-grained Ti-O-based composites with ultrahigh compressive specific strength fabricated by spark plasma sintering. Mater. Sci. Eng., A 528, 1897–1900 (2011).Google Scholar
Yang, C., Liu, L.H., Cheng, Q.R., You, D.D., and Li, Y.Y.: Equiaxed grained structure: A structure in titanium alloys with higher compressive mechanical properties. Mater. Sci. Eng., A 580, 397–405 (2013).Google Scholar
Li, Y.Y., Zou, L.M., Yang, C., Li, Y.H., and Li, L.J.: Ultrafine-grained Ti-based composites with high strength and low modulus fabricated by spark plasma sintering. Mater. Sci. Eng., A, 560, 857–861 (2013).Google Scholar
Munir, Z., Tamburini, U.A., and Ohyanagi, M.: The effect of electric field and pressure on the synthesis and consolidation of materials: A review of the spark plasma sintering method. J. Mater. Sci. 41, 763–777 (2006).Google Scholar
Yang, C., Wei, T., Zeng, J., Liu, L.H., Qu, S.G., and Li, Y.Y.: Microstructure evolution and thermal properties in FeMoPCB alloy during mechanical alloying. J. Non-Cryst. Solids 358, 1459–1464 (2012).CrossRefGoogle Scholar
Standard Test Methods of Compression Testing of Metallic Materials at Room Temperature. (ASTM, 2009). http://www.astm.org/Standards/E9.htmGoogle Scholar
Cullity, B.D.: Elements of X-ray Diffraction (Addison-Wesley, Reading, MA, 1978); pp. 102 and 356.Google Scholar
Sreeramamurthy, A., Harold, M., Charles, A.G., Brett, W.N., and Oberson, P.G.: Mechanical properties of alloys consisting of two ductile phases. Prog. Mater. Sci. 51, 632–709 (2006).Google Scholar
Smallman, R.E. and Ngan, A.H.W.: Plastic Deformation and Dislocation Behaviour. In Modern Physical Metallurgy (8 th ed). (Elsevier, New York, NY, 2014); 357–414.Google Scholar
MPIF, P.B.: Powder Metallurgy Design Manual, 3rd ed. Metal Powder Industries Federation: Princeton, NJ, 1998.Google Scholar