Tensile behavior of stainless steel 304L to Ni-20Cr functionally graded material: Experimental characterization and computational simulations

This study presents experimental and computational analyses of the phase composition mechanical behavior a functionally graded material (FGM) grading from 100 vol% 304L stainless steel (SS304L) to Ni-20Cr (NiCr) in 10 increments. The FGM was evaluated by extracting tensile specimens SS304L-rich NiCr-rich regions FGM, with former behaving ductile manner latter being relatively brittle. brittle response sample explained presence eutectic FCC+BCC this sample, as identified Scheil-Gulliver simulations along analyses. spatially varying yield flow determined through comparison finite element analysis experimentally measured stress-strain curves surface strain contours. results highlight that overall SS304L NiCr are preserved SS304L/NiCr but formation further reduced ductility within where it formed (90 NiCr/10 SS304L).