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Fracture Surface Analysis of Ball Bearing Steel by X-Ray Residual Stress Measurement

Published online by Cambridge University Press:  06 March 2019

Hirokazu Nakashima ,
Noriyuki Tsushima  and
Hiroshi Muro
Hirokazu Nakashima
Affiliation:
NTN Toyo Bearing Co. Ltd., 511 Kuwana, Japan
Noriyuki Tsushima
Affiliation:
NTN Toyo Bearing Co. Ltd., 511 Kuwana, Japan
Hiroshi Muro
Affiliation:
NTN Toyo Bearing Co. Ltd., 511 Kuwana, Japan
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Plastic deformation necessarily accompanies fracture even in high hardness steels such as ball bearing steel, though it is within a very shallow layer just under the fracture surface. The depth of the plastic deformation zone can he determined by X-ray measurement of half value breadth. However, in the case of high hardness steel, the half value breadth is not changed significantly by this kind of plastic deformation. On the contrary, residual stress on the fractured surface was found to change remarkably depending on the mode of fracture such as static, fatigue or delayed types.

Information

Type
X-Ray Diffraction Stress (Strain) Determination
Information
Advances in X-Ray Analysis , Volume 23: Twenty-Eighth Annual Conference on Applications of X-ray Analysis, July 30 - August 3, 1979 , 1979 , pp. 317 - 323
Copyright
Copyright © International Centre for Diffraction Data 1979

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References

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