Porosity in Millimeter-Scale Welds of Stainless Steel: Three-Dimensional Characterization
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
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.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1044948
- Report Number(s):
- SAND--2012-4474
- Country of Publication:
- United States
- Language:
- English
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