scholarly journals Microstructure and Mechanical Properties of Laser Beam Welded Joints between Fine-Grained and Standard Ti-6Al-4V Sheets Subjected to Superplastic Forming

2014 ◽  
Vol 17 (3) ◽  
pp. 374-382 ◽  
Author(s):  
Nikolai Kashaev ◽  
Volker Ventzke ◽  
Manfred Horstmann ◽  
Stefan Riekehr ◽  
Grigory Yashin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laser Beam ◽  
Welded Joints ◽  
Superplastic Forming ◽  
Fine Grained ◽  
Microstructure And Mechanical Properties

Microstructure and Mechanical Properties of Welded Joints of Low Carbon Steels Welded by Laser Beam Oscillating Welding

2020 ◽  
Vol 47 (3) ◽  
pp. 0302006
Author(s):  
陈靖雨 Chen Jingyu ◽  
王晓南 Wang Xiaonan ◽  
吕凡 Lü Fan ◽  
夏志新 Xia Zhixin ◽  
陈夏明 Chen Xiaming ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laser Beam ◽  
Welded Joints ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Microstructure And Mechanical Properties

Effect of Cooling Condition on Microstructure and Mechanical Properties in Large Line Energy Welded Joints of Ultra-Fine Grained Steel

2011 ◽  
Vol 189-193 ◽  
pp. 3345-3350 ◽  
Author(s):  
Hong Yun Zhao ◽  
Li Zhou ◽  
Bo Chen ◽  
Guo Dong Wang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Heat Affected Zone ◽  
Welded Joints ◽  
Cooling Condition ◽  
Water Cooling ◽  
Line Energy ◽  
Fine Grained ◽  
Heavy Plate ◽  
Microstructure And Mechanical Properties

The medium and heavy plate of 800 MPa grade ultra-fine grained steel was welded by CO2 gas shielded welding using large line energy. The effect of cooling condition on microstructure and mechanical properties of welded joints was investigated. The results showed that the cases about significant grain size increasing and strength decreasing do exist in the heat affected zone of large line energy welded joints of 800 MPa grade ultra-fine grained steel. Grain growth and softening in the heat affected zone could be suppressed effectively by water cooling in the course of welding. The mechanical properties of welded joints could be significantly increased by water cooling, and the process of CO2 gas shielded welding under water cooling is practical for joining ultra-fine grained steel using large line energy.

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