Porosity in millimeter-scale welds of stainless steel : three-dimensional characterization. | Zendy

Larry K. Aagesen | Zendy; Jonathan D Madison | Zendy

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Porosity in millimeter-scale welds of stainless steel : three-dimensional characterization.

Author(s) -

Larry K. Aagesen,

Jonathan D Madison

Publication year - 2012

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/1044948

Subject(s) - metallography , materials science , welding , porosity , characterization (materials science) , microstructure , millimeter , metallurgy , weld pool , composite material , enhanced data rates for gsm evolution , optics , arc welding , gas tungsten arc welding , engineering , telecommunications , physics , nanotechnology

A variety of edge joints utilizing a continuous wave Nd:YAG laser have been produced and examined in a 304-L stainless steel to advance fundamental understanding of the linkage between processing and resultant microstructure in high-rate solidification events. Acquisition of three-dimensional reconstructions via micro-computed tomography combined with traditional metallography has allowed for qualitative and quantitative characterization of weld joints in a material system of wide use and broad applicability. The presence, variability and distribution of porosity, has been examined for average values, spatial distributions and morphology and then related back to fundamental processing parameters such as weld speed, weld power and laser focal length

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