Effect of low-temperature cooling on corrosion properties of laser welding Hastelloy C-276/304 stainless steel with filler wire

2022 ◽  
Vol 148 ◽  
pp. 107755
Author(s):  
Bo Cheng ◽  
Dongjiang Wu ◽  
Kaojie Yue ◽  
Guangyi Ma ◽  
Fangyong Niu
Keyword(s):  
Stainless Steel ◽  
Low Temperature ◽  
Laser Welding ◽  
304 Stainless Steel ◽  
Filler Wire ◽  
Corrosion Properties

scholarly journals Underwater laser welding for 304 stainless steel with filler wire

2020 ◽  
Vol 9 (6) ◽  
pp. 15648-15661
Author(s):  
Yunlong Fu ◽  
Ning Guo ◽  
Qi Cheng ◽  
Di Zhang ◽  
Jicai Feng
Keyword(s):  
Stainless Steel ◽  
Laser Welding ◽  
304 Stainless Steel ◽  
Filler Wire ◽  
Underwater Laser

Electrochemical Evaluation on the Corrosion Properties of Welding Zones of 304 Stainless Steel

2010 ◽  
Vol 146-147 ◽  
pp. 1238-1242
Author(s):  
Kyung Man Moon ◽  
Yun Hae Kim ◽  
Sung Jin Kim ◽  
Ji Hyeong Yoon ◽  
Youn Chang Lee ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Welding ◽  
Corrosion Potential ◽  
Corrosion Current ◽  
304 Stainless Steel ◽  
Cyclic Voltammogram ◽  
Chromium Depletion ◽  
Corrosion Properties ◽  
Current Densities ◽  
Electrochemical Evaluation

Two types of welding methods were performed on austenitic 304 stainless steel: laser welding and TIG welding. The differences of the corrosion characteristics of the welded zones from the two welding methods were investigated with electrochemical methods, such as measurement of the corrosion potential, polarization curves, cyclic voltammogram, etc. The Vickers hardness of all laser-welded zones (WM:Weld Metal, HAZ:Heat-Affected Zone, BM:Base Metal) was relatively higher while their corrosion current densities exhibited a comparatively lower value than those which were TIG welded. In particular, the corrosion current density of the TIG-welded HAZ had the highest value among all other welding zones, which suggests that chromium depletion due to the formation of chromium carbide occurs in the HAZ, which is in the sensitization temperature range, thus it can easily be corroded with an active anode. Intergrenular corrosion was also observed at the TIG-welded HAZ and WM zones. Consequently, we can see that corrosion resistance of all austenitic 304 stainless steel welding zones can be improved via the use of laser welding.

Study on Laser Welding of Phone Nuts

2013 ◽  
Vol 815 ◽  
pp. 778-781
Author(s):  
Xiao Hong Wu
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Laser Pulse ◽  
Laser Welding ◽  
Pulse Energy ◽  
Pulse Width ◽  
Peak Power ◽  
Laser Pulse Energy ◽  
304 Stainless Steel ◽  
Power Pulse

Used YAG pulse laser to weld 304 stainless steel nuts, studied about the parameters such as peak power, pulse width, defocus distance impacting on the performance of the joints welded by laser. The studies showed that the tensile strength and torque of the nuts increased as the peak power and the pulse width increased.Burn through in welding easy occur when laser pulse energy is too big, pulse width is too wide or defocus distance is too low.

Microstructure Analysis of Fiber Laser Welding between E36 and 304 Stainless Steel

2015 ◽  
Vol 52 (4) ◽  
pp. 041403
Author(s):  
刘东宇 Liu Dongyu ◽  
李东 Li Dong ◽  
李凯斌 Li Kaibin ◽  
陈倩倩 Chen Qianqian
Keyword(s):  
Stainless Steel ◽  
Laser Welding ◽  
Fiber Laser ◽  
Microstructure Analysis ◽  
304 Stainless Steel ◽  
Fiber Laser Welding
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