Microstructural Study of Mandrel-Bent 1/16-Inch Stainless Steel Tubing.

摘要

The results of a study to determine the quality of 1/16-in.-o.d. type 316 stainless steel tubing following mandrel bending are presented. Characterization included measurement of nominal bend radii, microphotographic documentation of internal microstructural features, microhardness measurements, and magnetic susceptibility determination. Tube wall thickness measurements indicated no unusual thinning. Examination of longitudinal sections revealed no tendency for cracking, and only mild work-hardening was detected. Magnetic susceptibility determinations revealed little if any tendency for mechanically induced martensite formation. 2 figs., 4 tabs.