Unlocking the cause of pitting corrosion in 3D-printed stainless steel

Scientists from Lawrence Livermore National Laboratory (LLNL), Livermore, Calif., delved into the mysterious world of pitting corrosion in additively manufactured (3D-printed) stainless steel 316L in seawater. Stainless steel 316L is a popular choice for marine applications due to its excellent combination of mechanical strength and corrosion resistance. This holds even more true after 3D printing, but even this resilient material isn’t immune to the scourge of pitting corrosion. The LLNL team used transmission electron microscopy and x-ray photoelectron spectroscopy to do a deep-dive microscopy study to figure out what could potentially be responsible for corrosion.

NSL Analytical Services relocates Metallurgical Testing Laboratory

NSL Analytical Services, Cleveland, Ohio, an independent analytical and metallurgical testing services company serving U.S. and global customers, announces a significant milestone in its growth trajectory with the relocation of one of its two Cleveland-area testing laboratories and the addition of high-temperature stress rupture testing to its offerings.

One Minute Mentor: Gas Nitriding Equipment

Gas nitriding and nitrocarburizing can be processed in horizontal or vertical chamber furnaces with refractory insulation. However, to allow a quick change of the atmosphere and to avoid influences resulting from previous processes in the same furnace, retort furnaces are preferred. To enable an acceptable production capacity, large vertical retort furnaces are used. Figure 23 […]