A TEM investigation of crack formation mechanism on chrome-molybdenum steel tested under real driving conditions

Kenji Matsumoto, Hideo Watanabe, Naoaki Yoshida

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

Many automotive components of gears, power transmissions, and engines are made of chrome molybdenum steel, which has high wear resistance. The life of automobiles depends on the life of such components. In order to extend the life of components, it is important to know the mechanism of wear of metallic parts. Many studies have been conducted on the wear mechanisms. Recently, we found a unique crystalline structure that cannot be explained by the established metallurgical theory in the course of transmission electron microscope (TEM) examination of the grain structures 0.2 to 1 μm deep from the sliding surfaces of a tested transmission part. The original body-centered cubic (BCC) crystal changed to very fine face-centered cubic (FCC) crystal in the region just under the sliding surfaces. It is still not known why such a unique change was caused, but this is an intermediate report of our findings. This article discusses the relation between the unique transformation of the crystalline structure and formation of cracks, which led to production of fish-scale thin wear particles.

本文言語英語
ページ(範囲)897-907
ページ数11
ジャーナルTribology Transactions
56
6
DOI
出版ステータス出版済み - 2013

All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 表面および界面
  • 表面、皮膜および薄膜

フィンガープリント

「A TEM investigation of crack formation mechanism on chrome-molybdenum steel tested under real driving conditions」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル