Strengthening of Inner Wall of N80 Oil Tubing Induced by Laser Surface Melting Spirally

DOI

10.2991/icaemt-15.2015.24How to use a DOI?

Keywords

N80; Inner Wall; LSM; Spiral Machining; Strengthening

Abstract

Laser surface melting(LSM) was performed on the inner wall of N80 oil tubing by the spiral mode. The results show that the microstructure of N80 oil tubing consists of zonal pearlite and ferrite. After LSM, the cross section was divided into the melted zone composed of martensite transformation hardening zone, high temperature tempering zone and the matrix. The microhardness was improved significantly, while the maximum appeared in the transformation hardening zone. The uneven wear phenomenon occurred on the inner wall of the N80 oil tubing, and a lot of plough and obvious spalling appeared. In addition, the wear resistance of the laser melted N80 oil tubing was improved obviously, especially the wear resistance of the melted sample with small pitch is higher than the large pitch. The plastic deformation stopped at the interface of the melted zone and the untreated zone, and the wear scars are shallow.

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  - Lixin Song
AU  - Meiyan Li
PY  - 2015/08
DA  - 2015/08
TI  - Strengthening of Inner Wall of N80 Oil Tubing Induced by Laser Surface Melting Spirally
BT  - Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology
PB  - Atlantis Press
SP  - 117
EP  - 120
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaemt-15.2015.24
DO  - 10.2991/icaemt-15.2015.24
ID  - Song2015/08
ER  -