Microstructure, Performance and Phase Study on T250 Maraging aging steel Pipe after Spinning and Aging

DOI

10.2991/icaemt-15.2015.167How to use a DOI?

Keywords

Maraging aging steels, Spinning, Aging, Microstructure, Performance, Phase.

Abstract

The raw material of tested T250 Maraging aging steel is solid-solution steel pipe. Microstructure, performance and phase changes of T250 steel pipe after spinning and aging were studied by Optical Microscope (OM), Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), Three Dimensional Atom Probe (3DAP) tests and so on. The study shows that the structure of T250 is elongated and directional after spinning processing, and the matrix structure is martensite matrix with a large amount of global phases in diffuse distribution. After aging treatment, phases Al3Ti and Ni3Al transform into Ni3(Al,Ti) which gradually turns from globular to short rod, and Fe2Mo to MoSi2. The hardness of T250 steel pipe enhances mainly because of work hardening and aging strengthening.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Caihong Chen
AU  - Shaoyu Zhang
AU  - Yong'An Min
PY  - 2015/08
DA  - 2015/08
TI  - Microstructure, Performance and Phase Study on T250 Maraging aging steel Pipe after Spinning and Aging
BT  - Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology
PB  - Atlantis Press
SP  - 881
EP  - 886
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaemt-15.2015.167
DO  - 10.2991/icaemt-15.2015.167
ID  - Chen2015/08
ER  -