Paper Title:
Influence of Subjection to Plasma Nitriding Surface Modifications on Ultra-High Cycle Fatigue Behavior of Ti-6Al-4V
  Abstract

Using the ultrasonic fatigue test method, the influence of subjection to plasma nitriding surface modifications on the ultra-high cycle fatigue behavior of Ti-6Al-4V was investigated, then a comparison with corresponding behaviors of the normal Ti-6Al-4V was made. The results show the S-N curve of Ti-6Al-4V with plasma nitriding surface modifications still continuously declines, no conventional fatigue limit exists for Ti-6Al-4V. Plasma nitriding surface modifications enhance surface hardness, but they make the material fatigue strength decrease by about 17 %. The fractography of fatigue failure has been observed by scanning electron microscopy. The observation shows that fatigue failure initiates from internal of specimen after the fatigue life of 108 cycles and fatigue cracks mainly initiate from the surface of specimen before the fatigue life of 108 cycles.

  Info
Periodical
Chapter
Chapter 7: Building Materials
Edited by
Paul P. Lin and Chunliang Zhang
Pages
1731-1735
DOI
10.4028/www.scientific.net/AMM.105-107.1731
Citation
Y. Z. Wu, Q. Y. Wang, Q. L. Ouyang, "Influence of Subjection to Plasma Nitriding Surface Modifications on Ultra-High Cycle Fatigue Behavior of Ti-6Al-4V", Applied Mechanics and Materials, Vols. 105-107, pp. 1731-1735, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Juraj Belan
Abstract:The Inconel’s alloy IN 718 has been developed by International Nickel Company in early 50-ties of 20th century. It is...
9
Authors: Han Qing Liu, Qing Yuan Wang, Zhi Yong Huang, Zhen Jie Teng
Chapter 7: Life Prediction and Modeling
Abstract:Carbon steel is a kind of metallic material that widely used in construction, machinery, manufacturing and other domains. In the mechanical...
305
Authors: Jiu Kai Li, Yong Jie Liu, Qing Yuan Wang, Fang Hou
Chapter 4: Influence of Environment and Temperature
Abstract:A high-temperature ultrasonic fatigue testing system was developed to evaluate the gigacycle fatigue properties of Ti-17. Ultrasonic (20 kHz)...
131
Authors: X.J. Cao, Luo Peng Xu, Chong Wang, Jiang Jin, Qing Yuan Wang
Chapter 3: Advanced Materials on Very High Cycle Fatigue
Abstract:In order to investigate the effect of shot peening on the long life fatigue properties of Ti6Al4V (TC4), ultrasonic fatigue tests were...
81