Microstructure and mechanical properties of a graded structural material
作者： H.S. Ren , D. Liu , H.B. Tang , X.J. Tian , Y.Y. Zhu
DOI: 10.1016/J.MSEA.2014.06.016
关键词:
摘要: Abstract Based on the fact that performance requirements are usually different from one part to another in component, a novel graded structural material (GSM) of Ti–6Al–4V/Ti–6.5Al–3.5Mo–1.5Zr–0.3Si has been designed and successfully fabricated by laser melting deposition (LMD) manufacturing technology. Microstructure chemical composition have characterized OM, SEM EPMA. Micro-hardness room temperature tensile property evaluated as well. Large columnar grains growing epitaxially traversing multiple deposited layers occur both Ti–6Al–4V Ti–6.5Al–3.5Mo–1.5Zr–0.3Si part. The columnar-to-equiaxed-to-columnar transition happens gradient zone because thermal behavior around molten pool undergoes unstable state stable at beginning LMD process. microstructure micro-hardness vary gradually function composition. Both change abruptly interlaminations exhibit characteristic steps. According results, fracture takes place when is tested longitudinal direction, illustrating bonding strength stronger than direction. transverse direction falls between Mechanical during test analyzed
sci-hub.se 参考文章(31)
S. Banerjee, H.L. Fraser, P.C. Collins, R. Banerjee, Laser deposition of compositionally graded titanium–vanadium and titanium–molybdenum alloys Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 352, pp. 118- 128 ,(2003) , 10.1016/S0921-5093(02)00909-7
Liang Wang, Sergio Felicelli, Process Modeling in Laser Deposition of Multilayer SS410 Steel Journal of Manufacturing Science and Engineering-transactions of The Asme. ,vol. 129, pp. 1028- 1034 ,(2007) , 10.1115/1.2738962
C.M. Liu, X.J. Tian, H.B. Tang, H.M. Wang, Microstructural characterization of laser melting deposited Ti–5Al-5Mo–5V–1Cr–1Fe near β titanium alloy Journal of Alloys and Compounds. ,vol. 572, pp. 17- 24 ,(2013) , 10.1016/J.JALLCOM.2013.03.243
Xinhua Wu, Jing Liang, Junfa Mei, C. Mitchell, P.S. Goodwin, W. Voice, Microstructures of laser-deposited Ti–6Al–4V Materials & Design. ,vol. 25, pp. 137- 144 ,(2004) , 10.1016/J.MATDES.2003.09.009
X. Lin, T.M. Yue, Phase formation and microstructure evolution in laser rapid forming of graded SS316L/Rene88DT alloy Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 402, pp. 294- 306 ,(2005) , 10.1016/J.MSEA.2005.05.024
C. K. Syn, D. R. Lesuer, J. Wolfenstine, O. D. Sherby, Layer thickness effect on ductile tensile fracture Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 24, pp. 1647- 1653 ,(1993) , 10.1007/BF02646603
M. Gäumann, R. Trivedi, W. Kurz, Nucleation ahead of the advancing interface in directional solidification Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. pp. 763- 769 ,(1997) , 10.1016/S0921-5093(97)80081-0
X. Lin, T.M. Yue, H.O. Yang, W.D. Huang, Microstructure and phase evolution in laser rapid forming of a functionally graded Ti-Rene88DT alloy Acta Materialia. ,vol. 54, pp. 1901- 1915 ,(2006) , 10.1016/J.ACTAMAT.2005.12.019
X. Lin, T.M. Yue, H.O. Yang, W.D. Huang, Laser rapid forming of SS316L/Rene88DT graded material Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 391, pp. 325- 336 ,(2005) , 10.1016/J.MSEA.2004.08.072
R Banerjee, D Bhattacharyya, P.C Collins, G.B Viswanathan, H.L Fraser, Precipitation of grain boundary α in a laser deposited compositionally graded Ti–8Al–xV alloy – an orientation microscopy study Acta Materialia. ,vol. 52, pp. 377- 385 ,(2004) , 10.1016/J.ACTAMAT.2003.09.038