Effect of Heat Treatment on the High Cycle Fatigue Behaviour of S2205 Duplex Stainless Steels

被引：1

作者：

Shamanth, V ^{[1
]}

Kumar, Piyush ^{[1
]}

Ravishankar, K. S. ^{[1
]}

机构：

[1] Natl Inst Technol Karnataka, Dept Met & Mat Engn, Mangalore 575025, India

来源：

MATERIALS TODAY-PROCEEDINGS | 2017年 / 4卷 / 10期

关键词：

Duplex stainless steels; High cycle fatigue; Embrittlement; reversion heat treatment; alpha and alpha prime precipitate;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper deals with the effect of heat treatment on the high cycle fatigue behavior of duplex stainless steels. In this investigation the specimens were annealed, aged, reversion heat treated and re-aged for varying periods. The results obtained showed that the microstructure plays an important role in the change in fatigue lives. The fatigue resistance was high in the aged and re-aged heat treated condition because of the presence of alpha, alpha prime and some molybdenum rich chromium nitride precipitates in their ferrite matrix. While in the annealed and reversion heat treated condition the samples were free from the precipitates and also there was no much difference in the hardness values of austenite and ferrite phases, hence there was a significant change in their fatigue lives when compared to that of the embrittled samples. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：10798 / 10802

页数：5

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