Re effects on phase stability and mechanical properties of MoSS+Mo3Si+Mo5SiB2 alloys
作者： Y. Yang , H. Bei , J. Tiley , E.P. George
DOI: 10.1016/J.JALLCOM.2012.12.047
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摘要: Abstract In this paper, we investigate the effects of Re additions on microstructure and mechanical properties a ternary alloy with composition Mo-12.5Si-8.5B (at.%). This has three-phase consisting Mo solid-solution (MoSS), Mo3Si, Mo5SiB2 our results show that up to 8.4 at.% can be added it without changing its or forming any brittle σ phase at 1600 °C. Three-point bend tests using chevron-notched specimens showed did not improve fracture toughness alloy. Nanoindentation performed MoSS in increases Young’s modulus, but does lower hardness as some solid solution alloys. Based thermodynamic calculations microstructural analyses, lack softening effect is attributed increased Si levels Re-containing since known increase hardness. possibly why there no Re-induced improvement toughness.
sci-hub.se 参考文章(29)
Ying Yang, Shuanglin Chen, Y. Austin Chang, Thermodynamic modeling of the Re–Si–B system Intermetallics. ,vol. 18, pp. 51- 56 ,(2010) , 10.1016/J.INTERMET.2009.06.003
Steffen Burk, Bronislava Gorr, Hans-Jürgen Christ, Daniel Schliephake, Martin Heilmaier, Christian Hochmuth, Uwe Glatzel, High-temperature oxidation behaviour of a single-phase (Mo,Ti)5Si3 (Mo--Si--Ti) alloy Scripta Materialia. ,vol. 66, pp. 223- 226 ,(2012) , 10.1016/J.SCRIPTAMAT.2011.10.042
Ying Yang, Chuan Zhang, Shuanglin Chen, Dane Morgan, Y. Austin Chang, First-principles calculation aided thermodynamic modeling of the Mo–Re system Intermetallics. ,vol. 18, pp. 574- 581 ,(2010) , 10.1016/J.INTERMET.2009.10.012
H. Bei, Y. Yang, G.B. Viswanathan, C.J. Rawn, E.P. George, J. Tiley, Y.A. Chang, Formation, stability and crystal structure of the σ phase in Mo-Re-Si alloys Acta Materialia. ,vol. 58, pp. 6027- 6034 ,(2010) , 10.1016/J.ACTAMAT.2010.07.020
I. Merkel, U. Messerschmidt, Fracture toughness of sintered SiC ceramics: a comparison between different methods Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 151, pp. 131- 135 ,(1992) , 10.1016/0921-5093(92)90200-K
S.-L. Chen, S. Daniel, F. Zhang, Y.A. Chang, X.-Y. Yan, F.-Y. Xie, R. Schmid-Fetzer, W.A. Oates, The PANDAT software package and its applications Calphad-computer Coupling of Phase Diagrams and Thermochemistry. ,vol. 26, pp. 175- 188 ,(2002) , 10.1016/S0364-5916(02)00034-2
J.H Schneibel, M.J Kramer, D.S Easton, A Mo–Si–B intermetallic alloy with a continuous α-Mo matrix Scripta Materialia. ,vol. 46, pp. 217- 221 ,(2002) , 10.1016/S1359-6462(01)01227-1
H. Bei, E.P. George, G.M. Pharr, Small-scale mechanical behavior of intermetallics and their composites Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 483, pp. 218- 222 ,(2008) , 10.1016/J.MSEA.2006.12.185
Ying Yang, H. Bei, Shuanglin Chen, E.P. George, Jaimie Tiley, Y. Austin Chang, Effects of Ti, Zr, and Hf on the phase stability of Mo_ss + Mo3Si + Mo5SiB2 alloys at 1600 °C Acta Materialia. ,vol. 58, pp. 541- 548 ,(2010) , 10.1016/J.ACTAMAT.2009.09.032
S. Burk, B. Gorr, M. Krüger, M. Heilmaier, H. -J. Christ, Oxidation behavior of Mo-Si-B-(X) alloys: Macro- and microalloying (X= Cr, Zr, La2O3) JOM. ,vol. 63, pp. 32- 36 ,(2011) , 10.1007/S11837-011-0203-2