Abstract
The purpose of this study is to develop a rapid nitriding using a surface modification which is a combination of atmospheric-controlled induction-heating fine particle peening (AIH-FPP) and nitrogen gas blow. AIH-FPP was performed for titanium alloy (Ti-6Al-4V ELI grade) at 1173 K for 180 s in a controlled nitrogen atmosphere with an oxygen concentration less than 10 ppm without supplying particles. A nitrogen compound (TiN) was formed on the AIH-FPP treated surface, which results in increasing the surface hardness of Ti-6Al-4V alloy. To examine the effect of AIH-FPP on the fatigue properties of Ti-6Al-4V alloy, four-point bending fatigue tests were performed at a stress ratio of 0.1 in air at room temperature. It was found that the AIH-FPP treated specimens showed low fatigue limit due to the formation of a brittle compound layer and coarse microstructure.
| Original language | English |
|---|---|
| Pages (from-to) | 3432-3438 |
| Number of pages | 7 |
| Journal | Procedia Structural Integrity |
| Volume | 2 |
| DOIs | |
| Publication status | Published - 2016 |
Keywords
- Fatigue
- Four-point bending
- Induction heating
- Nitriding
- Surface modification
- Titanium alloy
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Civil and Structural Engineering
- Materials Science(all)