Laser Roll Welding of Dissimilar Metal Joint of Titanium to Low Carbon Steel

2008 ◽  
Vol 580-582 ◽  
pp. 543-546 ◽  
Author(s):  
Hitoshi Ozaki ◽  
Reiji Ichioka ◽  
Takashi Matsuura ◽  
Muneharu Kutsuna
Keyword(s):  
Carbon Steel ◽  
Intermetallic Compound ◽  
Low Carbon Steel ◽  
Weight Ratio ◽  
High Strength ◽  
Low Carbon ◽  
Tensile Shear ◽  
Dissimilar Metal ◽  
Metal Joint ◽  
Structural Panel

Titanium is one of structural materials. It has several advantages such as high corrosion resistance and high strength-to-weight ratio. The demand of titanium structural panel and the dissimilar joint has been increased in industry. It is well known that joining of steel and titanium is difficult because of generating the brittle intermetallic compound. In the present work, the laser roll welding of dissimilar metals, titanium to low carbon steel been investigated using a 2.4kW CO2 laser and a 2kW fiber laser. The effects of process parameters on the formation of intermetallic compound at the interlayer and on the mechanical properties were investigated to get a sound dissimilar metal joint. As a result, welded joints of titanium to low carbon steel were broken in the base metal of low carbon steel in the tensile-shear test.

scholarly journals Laser Roll Welding of Dissimilar Metal Joint of Low Carbon Steel and Titanium

2007 ◽  
Vol 25 (1) ◽  
pp. 173-178 ◽  
Author(s):  
Hitoshi Ozaki ◽  
Reiji Ichioka ◽  
Muneharu KUTSUNA
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Dissimilar Metal ◽  
Metal Joint

An Exceptional Synergy of High Strength, Ductility and Toughness in a Gradient-Structured Low-Carbon Steel

2018 ◽  
Vol 27 (11) ◽  
pp. 5788-5793
Author(s):  
Yindong Shi ◽  
Lina Wang ◽  
Yulong Zhang ◽  
Hailong Xie ◽  
Yajun Zhao
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
High Strength ◽  
Low Carbon

Interfacial segregation at Cu-rich precipitates in a high-strength low-carbon steel studied on a sub-nanometer scale

2006 ◽  
Vol 54 (3) ◽  
pp. 841-849 ◽  
Author(s):  
Dieter Isheim ◽  
Michael S. Gagliano ◽  
Morris E. Fine ◽  
David N. Seidman
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
High Strength ◽  
Nanometer Scale ◽  
Low Carbon ◽  
Interfacial Segregation

scholarly journals Quantitative Description of External Force Induced Phase Transformation in Silicon–Manganese (Si–Mn) Transformation Induced Plasticity (TRIP) Steels

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3781
Author(s):  
Zhongping He ◽  
Huachu Liu ◽  
Zhenyu Zhu ◽  
Weisen Zheng ◽  
Yanlin He ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Carbon Steel ◽  
Trip Steel ◽  
Retained Austenite ◽  
Low Carbon Steel ◽  
High Strength ◽  
High Plasticity ◽  
Low Carbon ◽  
Transformation Induced Plasticity ◽  
Trip Steels

Transformation Induced Plasticity (TRIP) steels with silicon–manganese (Si–Mn) as the main element have attracted a lot of attention and great interest from steel companies due to their low price, high strength, and high plasticity. Retained austenite is of primary importance as the source of high strength and high plasticity in Si–Mn TRIP steels. In this work, the cold rolled sheets of Si–Mn low carbon steel were treated with TRIP and Dual Phase (DP) treatment respectively. Then, the microstructure and composition of the Si–Mn low carbon steel were observed and tested. The static tensile test of TRIP steel and DP steel was carried out by a CMT5305 electronic universal testing machine. The self-built true stress–strain curve model of TRIP steel was verified. The simulation results were in good agreement with the experimental results. In addition, the phase transformation energy of retained austenite and the work borne by austenite in the sample during static stretching were calculated. The work done by austenite was 14.5 J, which was negligible compared with the total work of 217.8 J. The phase transformation energy absorption of retained austenite in the sample was 9.12 J. The role of retained austenite in TRIP steel is the absorption of excess energy at the key place where the fracture will occur, thereby increasing the elongation, so that the ferrite and bainite in the TRIP steel can absorb energy for a longer time and withstand more energy.

scholarly journals Effect of Carbon Partitioning, Carbide Precipitation, and Grain Size on Brittle Fracture of Ultra-High-Strength, Low-Carbon Steel after Welding by a Quenching and Partitioning Process

Metals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 747 ◽  
Author(s):  
Farnoosh Forouzan ◽  
M. Guitar ◽  
Esa Vuorinen ◽  
Frank Mücklich
Keyword(s):  
Grain Size ◽  
Carbon Steel ◽  
Weld Zone ◽  
Low Carbon Steel ◽  
High Strength ◽  
Precipitate Size ◽  
Low Carbon ◽  
Quenching And Partitioning ◽  
High Level ◽  
The Impact

To improve the weld zone properties of Advanced High Strength Steel (AHSS), quenching and partitioning (Q&P) has been used immediately after laser welding of a low-carbon steel. However, the mechanical properties can be affected for several reasons: (i) The carbon content and amount of retained austenite, bainite, and fresh martensite; (ii) Precipitate size and distribution; (iii) Grain size. In this work, carbon movements during the partitioning stage and prediction of Ti (C, N), and MoC precipitation at different partitioning temperatures have been simulated by using Thermocalc, Dictra, and TC-PRISMA. Verification and comparison of the experimental results were performed by optical microscopy, X-ray diffraction (XRD), Scanning Electron Microscop (SEM), and Scanning Transmission Electron Microscopy (STEM), and Energy Dispersive Spectroscopy (EDS) and Electron Backscatter Scanning Diffraction (EBSD) analysis were used to investigate the effect of martensitic/bainitic packet size. Results show that the increase in the number density of small precipitates in the sample partitioned at 640 °C compensates for the increase in crystallographic packets size. The strength and ductility values are kept at a high level, but the impact toughness will decrease considerably.

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