Spinning and heat-treatment effects on performance and microstructure of maraging steel

DOI

10.2991/icmra-15.2015.239How to use a DOI?

Keywords

maraging steel; spinning process; plastic deformation; heat-treatment; microstructure.

Abstract

The effect of spinning and subsequent heat-treatment on mechanical performance and microstructure evolution has been investigated extensively. Thin-wall tube of 18Ni Co-free Maraging steel (T250) prepared by forward spinning process emerges obvious radial shrinkage behavior after heat-treatment and the magnitude of the shrinkage induced by solution is almost the same as that by aging. Microstructure investigation shows that the residual stress and stain induced by spinning process and reversed austenite forming during aging might have the similar contribution to the radical shrinkage phenomenon. Solution treatment resulted in a drastically refined grain and recrystallised in microstructure, removing the effect of plastic deformation and improving hardness. Subsequent aging obtained a tempered microstructure, enhancing hardness strikingly for precipitation 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  - Zhengfei Hu
PY  - 2015/04
DA  - 2015/04
TI  - Spinning and heat-treatment effects on performance and microstructure of maraging steel
BT  - Proceedings of the 3rd International Conference on Mechatronics, Robotics and Automation
PB  - Atlantis Press
SP  - 1236
EP  - 1242
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmra-15.2015.239
DO  - 10.2991/icmra-15.2015.239
ID  - Hu2015/04
ER  -