An Investigation on Microstructure and Mechanical Properties of Nd:YAG Laser Beam Weld of Copper Beryllium Alloy
作者： S.A.A. Akbari Mousavi , S.T. Niknejad
DOI: 10.1007/S11661-009-9822-4
关键词:
摘要: Nd:YAG pulsed laser beam welding is conducted on UNS-C17200 copper beryllium sheet. Welding carried out in the as-annealed and as-aged conditions to investigate effects of preweld condition weld microstructure mechanical properties. Two different heat treatments including direct age treating solution annealing + subsequent are considered after welding. The microstructural characteristics metal regions (WMs) heat-affected zones (HAZ) four samples using tensile tests, hardness measurements, optical microscopy, electron X-ray diffraction (XRD). Results indicate that properties HAZ without postweld treatment adversely affected by grain boundary liquation observed if condition. Tensile strength WM improved a artificial at 315 °C for 3 hours. However, lower than base (BM) HAZ, because precipitation mechanism fusion zone not as effective BM. CuBe secondary phase precipitates during solidification. precipitates/matrix interface incoherent, which does significantly raise metal. Incoherent interdendritic dissolved structure annealing. Having performed aging, full throughout material were observed.
springer.com
harvard.edu
sci-hub.se 参考文章(9)
S. Zalkind, D. Moreno, Fracture characterization of welded copper-beryllium alloy Journal of Materials Science Letters. ,vol. 18, pp. 849- 852 ,(1999) , 10.1023/A:1006687924844
George F. Vander Voort, Metallography and microstructures ASM International. ,(2004)
Bruce Chalmers, Principles of Solidification ,(1964)
R. Kitey, H.V. Tippur, Role of particle size and filler–matrix adhesion on dynamic fracture of glass-filled epoxy. I. Macromeasurements Acta Materialia. ,vol. 53, pp. 1153- 1165 ,(2005) , 10.1016/J.ACTAMAT.2004.11.012
Zhenqing Zhao, Chunqing Wang, Mingyu Li, Lei Wang, Lingchao Kong, The effects of pulsed Nd:YAG laser irradiation on surface energy of copper Applied Surface Science. ,vol. 252, pp. 4257- 4263 ,(2006) , 10.1016/J.APSUSC.2005.07.005
Y. Rosenthal, Mechanical properties and fracture characteristics of aged Cu-1.8 wt% Be-0.2 wt% Co alloy in various loading modes Journal of Materials Science. ,vol. 27, pp. 2193- 2198 ,(1992) , 10.1007/BF01117936
O.A. Ojo, N.L. Richards, M.C. Chaturvedi, Contribution of constitutional liquation of gamma prime precipitate to weld HAZ cracking of cast Inconel 738 superalloy Scripta Materialia. ,vol. 50, pp. 641- 646 ,(2004) , 10.1016/J.SCRIPTAMAT.2003.11.025
H. Era, K. Kishitake, K. Naito, Spontaneous Deformation during Aging under Stress in a Copper-Beryllium Alloy Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 31, pp. 2765- 2771 ,(2000) , 10.1007/BF02830336
W.C Crone, Compositional variation and precipitate structures of copper–beryllium single crystals grown by the Bridgman technique Journal of Crystal Growth. ,vol. 218, pp. 381- 389 ,(2000) , 10.1016/S0022-0248(00)00563-7