Effects of Phosphorus on tensile and stress rupture properties of GH4169 alloy

DOI

10.2991/emeit.2012.319How to use a DOI?

Keywords

GH4169 alloys, Phosphorus, tensile, stress rupture, fractograph

Abstract

The influence of P on tensile properties at room temperature and 650 as well as the effects of P on rupture properties at 650/690 MPa of GH4169 alloy with standard heat treatment (STD) and direct aging heat treatment (DA) were investigated in this paper. Mechanism of the influence of P was also undertaken with microstructure and fractograph analysis. The results show that P content has little effect on tensile properties of alloys. While the stress rupture life improves significantly with an increase of P content due to grain boundary segregation of P increasing grain boundary bonding force. And P has less influence on stress rupture life of GH4169 alloy as STD than that as DA, which may be relevant to the enrichment of P on phase interface. Increasing P content from 0.006% to 0.019%, the stress rupture failure mode shows mainly transgranular fracture, decreased fraction of fine microvoids and deep dimple structure arises gradually.

Copyright

© 2012, 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  - Cheng Tang
AU  - Jinhui Du
AU  - Qun Deng
AU  - Zhongnan Bi
AU  - Minqing Wang
PY  - 2012/09
DA  - 2012/09
TI  - Effects of Phosphorus on tensile and stress rupture properties of GH4169 alloy
BT  - Proceedings of the 2nd International Conference on Electronic & Mechanical Engineering and Information Technology (EMEIT 2012)
PB  - Atlantis Press
SP  - 1439
EP  - 1445
SN  - 1951-6851
UR  - https://doi.org/10.2991/emeit.2012.319
DO  - 10.2991/emeit.2012.319
ID  - Tang2012/09
ER  -