About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
|
Presentation Title |
Design of a TRIP and TWIP Steel through Additive Manufacturing of Dissimilar Steels |
Author(s) |
Noah A. Sargent, Samad Firdosy, Xin Wang, Richard Otis, Jonathan D. Poplawsky, Wei Xiong |
On-Site Speaker (Planned) |
Noah A. Sargent |
Abstract Scope |
Functionally graded materials (FGMs) are manufactured using the directed energy deposition (DED) process through a dynamic variation of composition in consecutive deposited layers. In addition to the development of dissimilar material joints, FGMs research doubles as a high-throughput experimental methodology for alloy design. In this work, stainless steel 316L (SS316L) and high strength low alloy steel (HSLA) FGMs are manufactured using DED with the goal of designing a low Manganese TRIP & TWIP steel. Compression testing of as-built SS316L and HSLA FGM revealed evidence of TRIP & TWIP effects. Further tensile testing of the SS316L and HSLA alloy mixtures demonstrated the successful design of an as-built TRIP and TWIP steel with an ultimate strength of 980 MPa and elongation of 26%. Experimental measurements of microsegregation are compared with CALPHAD modeling to evaluate the ability to predict the impact of microsegregation on phase stability and stacking fault energy in as-built steels. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, ICME, Iron and Steel |