Thermal stresses on Laser Beam Welded steel

机译：激光束焊接钢的热应力

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Welded structural members are subject to residual stresses arising from solidification and shrinkage of the weld pool. Residuals stresses may produce distortions and cause premature failure on structural components by contributing to brittle fracture or to buckling. This may also be favoured by loss of toughness in the Heat Affected Zone (HAZ), a region metallurgically modified by heating, where cracks are more likely to form due to reduced toughness. In this paper is shown how the utilization of high energy density welding process such as Laser Beam Welding process may improve the mechanical performance of welded joints on structural steel and reduce residual stresses. Beneficial effects may result also from a smaller HAZ.

机译：焊接结构构件承受因焊接熔池的凝固和收缩而产生的残余应力。残余应力可能会导致脆性断裂或屈曲，从而产生变形并导致结构部件过早失效。热影响区（HAZ）的韧性损失也可能是有利的，该区域是通过加热进行冶金学改性的区域，在该区域中，由于韧性降低而更容易形成裂纹。本文显示了如何利用高能量密度焊接工艺（例如激光束焊接工艺）如何改善结构钢上焊接接头的机械性能并减少残余应力。较小的热影响区也可能产生有益的影响。

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来源
《International Structural Engineering and Construction Conference(ISEC-03); 20050920-23; Shunan(JP)》|2005年|P.805-810|共6页
会议地点 Shunan(JP)
作者
S. Missori;
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作者单位

Department Ingegneria Meccanica, Universita di Roma Tor Vergata, Italy;

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原文格式 PDF
正文语种 eng
中图分类混凝土结构、钢筋混凝土结构;
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1. Reduction of residual stresses in laser beam welds by means of defocused laser beams [J] . F. Tolle, A. Gumenyuk, M. Rethmeier Science and Technology of Welding and Joining . 2012,第5期

机译：通过散焦激光束减少激光束焊接中的残余应力
2. Reduction of residual stresses in laser beam welds by means of defocused laser beams [J] . F. To¨lle* A. Gumenyuk and M. Rethmeier Science and Technology of Welding & Joining . 2012,第5期

机译：通过散焦激光束减少激光束焊接中的残余应力
3. Numerical simulation of residual stresses induced by laser beam welding in a SUS316 stainless steel pipe with considering initial residual stress influences [J] . Dean Deng, Shoichi Kiyoshima Nuclear Engineering and Design . 2010,第4期

机译：考虑初始残余应力影响的SUS316不锈钢管中激光束焊接引起的残余应力的数值模拟
4. PREDICTION AND MEASUREMENT OF WELD RESIDUAL STRESSES IN THERMALLY AGED GIRTH-WELDED AUSTENITIC STEEL PIPES [C] . Ondrej Muransky, Mike C. Smith, Philip J Bendeich, ASME Pressure Vessels and Piping conference . 2012

机译：热老化的环焊奥氏体不锈钢管中焊接残余应力的预测和测量
5. Gravitational effects on weld pool shape and microstructural evolution during gas tungsten arc and laser beam welding on 304 stainless steel, nickel, and aluminum-4 wt.% copper alloy. [D] . Kang, Namhyun. 2003

机译：在304不锈钢，镍和铝含量为4％（重量）的铜钨合金气体弧焊和激光束焊接过程中，引力对焊缝形状和组织演变的引力影响。
6. Assessment of the Weldability of T-Welded Joints in 10 mm Thick TMCP Steel Using Laser Beam [O] . Jacek Górka 2018

机译：用激光束评估10 mm厚TMCP钢中T焊接头的可焊性
7. Numerical simulation and experimental investigation on the residual stresses in a laser beam welded dual phase DP600 steel plate: Thermo-mechanical material plasticity model [O] . Liu, S., Kouadri-Henni, A., Gavrus, A. 2017

机译：激光束焊接双相DP600钢板残余应力的数值模拟和实验研究：热机械材料塑性模型

Thermal stresses on Laser Beam Welded steel

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