跳至主要内容

Movement of Dislocations in the Sub-Surface of a Polycrystalline Metal by Cavitation Peening Observed by Transmission Electron Microscopy

Read  full  paper  at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53714#.VNBuHSzQrzE

ABSTRACT
The impact produced when cavitation bubbles collapse can be utilized to modify surfaces in the same way as shot peening and it is called cavitation peening (CP). CP is one of a number of surface modification techniques used to improve the fatigue strength of metallic materials by introducing compressive residual stress. Although it has been shown by an X-ray diffraction method that CP decreases the micro-strain related to dislocations in the sub-surface of a polycrystalline material, the mechanism for this decrease is unclear. In this paper, the movement of dislocations by CP was observed using transmission electron microscopy (TEM).
 
Cite this paper
Takakuwa, O. , Chiba, A. and Soyama, H. (2015) Movement of Dislocations in the Sub-Surface of a Polycrystalline Metal by Cavitation Peening Observed by Transmission Electron Microscopy. Materials Sciences and Applications, 6, 140-144. doi: 10.4236/msa.2015.62017.
 
References
[1]Soyama, H., Saito, K. and Saka, M. (2002) Improvement of Fatigue Strength of Aluminum Alloy by Cavitation Shotless Peening. Journal of Engineering Materials and Technology, 124, 135-139.
http://dx.doi.org/10.1115/1.1447926
 
[2]Macodiyo, D.O. and Soyama, H. (2003) Cavitation Shotless Peening for Improvement of Fatigue Strength of Carbonized Steel. International Journal of Fatigue, 25, 1217-1222.
http://dx.doi.org/10.1016/S0142-1123(03)00121-X
 
[3]Soyama, H. and Macodiyo, D.O. (2005) Fatigue Strength Improvement of Gears Using Cavitation Shotless Peening. Tribology Letters, 18, 181-184.
http://dx.doi.org/10.1007/s11249-004-1774-7
 
[4]Soyama, H., Kikuchi, T., Nishikawa, M. and Takakuwa, O. (2010) Introduction of Compressive Residual Stress into Stainless Steel by Employing a Cavitating Jet in Air. Surface and Coatings Technology, 205, 3167-3174.
http://dx.doi.org/10.1016/j.surfcoat.2010.11.031
 
[5]Soyama, H. (2014) The Use of Cavitation Peening to Increase the Fatigue Strength of Duralumin Plates Containing Fastener Holes. Materials Sciences and Applications, 5, 430-440.
http://dx.doi.org/10.4236/msa.2014.56047
 
[6]Soyama, H. and Yamada, N. (2008) Relieving Micro-Strain by Introducing Macro-Strain in a Polycrystalline Metal Surface by Cavitation Shotless Peening. Materials Letters, 62, 3564-3566.
http://dx.doi.org/10.1016/j.matlet.2008.03.055
 
[7]Ryan, N.D. and Mcqueen, H.J. (1986) Dynamic Recovery and Strain Hardening in the Hot Deformation of Type 317 Stainless Steel. Materials Science and Engineering, 81, 259-272.
http://dx.doi.org/10.1016/0025-5416(86)90267-3
 
[8]Kim, S.I. and Yoo, Y.C. (2001) Dynamic Recrystallization Behavior of AISI 304 Stainless Steel. Materials Science and Engineering A, 311, 108-113.
http://dx.doi.org/10.1016/S0921-5093(01)00917-0
 
[9]Belyakov, A., Kimura, Y. and Tsuzaki, K. (2005) Recovery and Recrystallization in Ferritic Stainless Steel after Large Strain Deformation. Materials Science and Engineering A, 403, 249-259.
http://dx.doi.org/10.1016/j.msea.2005.05.057
 
[10]Beck, P.A. (1954) Annealing of Cold Works Metals. Advances in Physics, 3, 245-324.
http://dx.doi.org/10.1080/00018735400101203
 
[11]Ostrovskii, I., Ostrovskaya, N., Korotchenkov, O. and Reidy, J. (2005) Radiation Defects Manipulation by Ultrasound in Ionic Crystals. IEEE Transactions on Nuclear Science, 52, 3068-3073.
http://dx.doi.org/10.1109/TNS.2005.861476
 
[12]Soyama, H., Takano, Y. and Ishimoto, M. (2000) Peening of Forging Die by Cavitation. Technical Review of Forging Technology, 25, 53-57.                                                                           eww150203lx
标签：

评论

发表评论

此博客中的热门博文

Electron Spin and Proton Spin in the Hydrogen and Hydrogen-Like Atomic Systems

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52202#.VIj7tMnQrzE Author(s) Stanisław Olszewski * Affiliation(s) Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland . ABSTRACT The mechanical angular momentum and magnetic moment of the electron and proton spin have been calculated semiclassically with the aid of the uncertainty principle for energy and time. The spin effects of both kinds of the elementary particles can be expressed in terms of similar formulae. The quantization of the spin motion has been done on the basis of the old quantum theory. It gives a quantum number n = 1/2 as the index of the spin state acceptable for both the electron and proton ...
发表评论
阅读全文

A Study on the Seismic Isolation Systems of Bridges with Lead Rubber Bearings

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52566#.VJt06cCAM4 Author(s)   Woo-Suk Kim , Dong-Joon Ahn , Jong-Kook Lee Affiliation(s) School of Architecture, Kumoh National Institute of Technology, Gumi, Republic of Korea . ABSTRACT This study consists of the development and presentation of example of seismic isolation system analysis and design for a continuous, 3-span, cast-in-place concrete box girder bridge. It is expected that example is developed for all Lead-Rubber Bearing (LRB) seismic isolation system on piers and abutments which placed in between super-structure and sub-structure. Design forces, displacements, and drifts are given distinctive consideration in...
发表评论
阅读全文

Effects of Karate Training on Basic Motor Abilities of Primary School Children

“You never attack first in karate” might be the best conclusion of karate, which is a martial art practiced typically without weapons. It’s reported that karate has a long history for several hundred years, but the modern karate was spread to the whole Japan from Okinawa in the early part of 20th century. Now it has become one of the most widely practiced martial art forms in the world. Usually, it’s divided into Kihon, Kata and Kumite. As for the beginners, Kihon is more suitable for them because it involves basic techniques. Due to karate consists of dynamic offensive and defensive techniques using all parts of the body to their maximum advantage, the best understanding of true karate practice is the perfection of oneself through the perfection of the art. It not only develops coordination, quickens reflexes, and builds stamina, but also develops composure, a clearer thought process, deeper insight into one’s mental capabilities, and more self-confidence. So many researchers stu...
发表评论
阅读全文