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Evaluation of Global and Local Deformation Behaviors of Similar Laser Welded Joints using Digital Image Correlation
Technical Paper
2014-01-0832
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Similar laser welded blanks with same material and same gauge have been extensive applied in automobile body for improving the material utilization and extending maximum coil size. It is known that, for TWBs with dissimilar material and thicknesses, the difference of material properties and/or thickness of the welded blanks, change of the material properties in the weld seam and heat-affected zones (HAZ) as well as location and orientation of the weld seam are reasons for reduced formability. However, the plastic deformation capacity of TWBs is reduced even when the material and thickness are the same.
The aim of this paper is to evaluate the deformation behaviors of similar laser welded joints. Uniaxial tensile of five laser welded joints, with 90°,60°,45°,30°and 0°weld orientations, were tested by using optical measurement-DIC (Digital Image Correlation). Strain /strain ratio distribution and evolution of each joint was analyzed and compared with base material. In addition, mechanical property of weld was determined using rule of mixture and hardness testing. Characterization of similar laser welded joints was interpreted based on the analyses of experimental results.
The results show that, for steel TWBs where laser weld is characterized with higher strength and lower ductility than base materials, the deformation in the soft base material is constrained by the strong laser weld. Tensile stress develops in the laser weld and compressive stress develops near the interface in the base material. The stress states were transferred due to the effect of strength mismatch between laser weld and base material, which also accounting for the decreased formability.
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Yanhua, L. and Lin, J., "Evaluation of Global and Local Deformation Behaviors of Similar Laser Welded Joints using Digital Image Correlation," SAE Technical Paper 2014-01-0832, 2014, https://doi.org/10.4271/2014-01-0832.Also In
References
- Azuma K. , Ikemoto K. , Arima K. , Sugiura H. and Takasago T. Proc. 16th IDDRG 1990 305 311
- Saunders F. I. and Wagoner R. H. Metallurgical and Materials Transactions 27 2605 2616 1996
- Abdullah K. , Wild P. M. , Jeswiet J. J. , and Ghasempoor A. Journal of Materials Processing Technology 113 91 97 2001
- Chung Kyung-Hwan , Lee Wonoh , Kim Ji Hoon , Kim Chongmin , Park Sung Ho , Kwon Dongil and Chung Kwansoo International Journal of Solids and Structures 46 344 363 2009
- Song Yanli and Hua Lin Materials Science and Engineering: A 552 222 229 2012
- Song Yanli , Hua Lin , Chu Dongning and Lan Jian Materials & Design 37 19 27 2012
- Rao D. , Heerens J. , Alves Pinheiro G. , dos Santos J.F. and Huber N. Materials Science and Engineering: A 527 5018 5025 2010
- Ambriz R.R. , Chicot D. , Benseddiq N. , Mesmacque G. and de la Torre S.D. European Journal of Mechanics - A/Solids 30 307 315 2011
- Zhan Mei , Du Hongfei , Liu Jing , Ren Ning , Yang He , Jiang Haomin , Diao Keshan and Chen Xinpin Materials Science and Engineering: A 527 2864 2874 2010
- Rojek J. , Hyrcza-Michalska M. , Bokota A. and Piekarska W. Archives of Civil and Mechanical Engineering 12 156 162 2012
- Leitão C. , Galvão I. , Leal R.M. and Rodrigues D.M. Materials & Design 33 69 74 2012
- Leitão C. , Costa M.I. , Khanijomdi K. and Rodrigues D.M. Materials & Design 51 968 974 2013
- Nakata Toshiya and Tanigawa Hiroyasu Fusion Engineering and Design 87 589 593 2012
- Scintilla L.D. , Palumbo G. , Sorgente D. and Tricarico L. Materials & Design 47 300 308 2013