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recrystallization occurs and the grain expresses equiaxed trend. The equiaxed degree increases with increasing tensile temperature and decreasing strain rate. Key words: Ti-6Al-4V alloy; laser beam welding... 2095 sheet[J]. Scripta Materialia, 2002, 46(5): 337?342. [5] HUANG J C, SHEN Y D, HAO N J. Characterization of electron beam welding of superplastic 8090 Al-Li alloys[J]. Materials Science......
Article ID: 1003-6326(2005)02-0384-05 Superplastic solid state welding of steel and copper alloy based on laser quenching of steel surface ZHANG Ke-ke(张柯柯), HAN Cai-xia(韩彩霞), QUAN Shu-li(权淑丽... on the feasibility of isothermal superplastic solid state welding of steel and copper alloy, the welded surface of steel surface was ultra-fined through laser quenching, and then the welding process tests......
transformation and resultant microstructure. The welded joints of Ti-6Al-4V alloy were fabricated by gas tungsten arc welding (GTAW), laser beam welding (LBW) and electron beam welding (EBW) processes.... The resultant tensile and impact properties of the welded joints were correlated with the weld metal microstructures. Key words: titanium alloy; gas tungsten arc welding; laser beam welding......
. The results show that the fracture strain of the joints after laser beam welding reduces by about 10.7% at room temperature. By means of laser beam welding, the fusion zones contain tensile RS, while... to the welding direction. Key words: magnesium alloy; twinning; laser beam welding; microstructure ......
of Technology, Lanzhou 730050, China Received 28 July 2006; accepted 15 September 2006 Abstract: CO2 laser beam welding of aluminum alloys with different thicknesses was carried out. The influences...]. Tailored welded aluminum alloy blanks are in great demand. Laser beam welding has several advantages over other welding processes. Some difficulties are encountered during laser welding of aluminum alloys......
Application of Electron Beam Surface Technologies in the Automotive Industry Rolf Zenker1,Anja Buchwalder2 (1.TU Bergakademie Freiberg / Zenker Consult Mittweida, Germany;2.TU Bergakademie Freiberg, Germany) 摘要:Progress in the beam deflection technique opens up new possibilities for the application of electron beam (EB)surface and welding technologies in the automotive industry......
Laser transformation hardening on rod-shaped carbon steel by Gaussian beam Jong-Do KIM1, Myeong-Hoon LEE1, Su-Jin LEE2, Woon-Ju KANG2 1. Division of Marine System Engineering, College... by overlap. Finally, the feasibility of laser transformation hardening is verified by using the beam with Gaussian intensity distribution. Key words: surface modification; laser transformation hardening......
as an alternative method for the laser lap welding because the arc can preheat or post-heat the weldment according to the arrangement of the laser beam and the arc. CO2 laser-micro plasma hybrid welding was applied... sheets with a new method [C]// International Congress on Applications of Lasers & Electro-Optics. Jacksonville, 2003: 274-284. [10] FORREST M G, LU F. Advanced dual beam laser welding of zinc......
Effects of laser beam welding parameters on mechanical properties and microstructure of AZ31B magnesium alloy G. PADMANABAN, V. BALASUBRAMANIAN Center for Materials Joining & Research, Department of Manufacturing Engineering, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India Received 18 October 2010; accepted 31 December 2010 Abstract: The effects of laser beam welding......
of laser energy; r is the laser beam radius at focus; Vl is the welding speed. The driving force of the flow of molten metal is the laser induced recoil pressure. According to Knight’s model, the recoil... and fluid flow Figure 2 shows temperature distributions at the x-z plane in metal during laser welding of 304 stainless steel. The laser beam moves along the positive x direction with a travel speed......
