2010 Fiscal Year Final Research Report
Establishment of high strength steel with good gigacycle fatigue properties
Project/Area Number |
20560096
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Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Materials/Mechanics of materials
|
Research Institution | National Institute for Materials Science |
Principal Investigator |
HIRUKAWA Hisashi National Institute for Materials Science, 材料信頼性センター, 主任研究員 (40354253)
|
Project Period (FY) |
2008 – 2010
|
Keywords | 疲労 |
Research Abstract |
This study aims at developing materials with different types of carbides and nitrides and setting guidelines for improving the fatigue properties of these materials. Ultrafine-grained steel, the chemical ingredients in which were appropriately controlled, was nitrided, and gigacycle fatigue properties were examined. The results confirmed that the gigacycle fatigue properties were improved by the synergetic effect of the precipitated fine cementite particles and fine nitrides. In addition, it was confirmed that internal fracture can be suppressed by effectively cleaning the material.
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Research Products
(4 results)