Residual Stresses in Ground Steels.

Doelle, H.; Cohen, J. B.

Residual Stresses in Ground Steels.

Active / Technical Report | Accession Number: ADA070798 |

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Abstract:

A new x-ray method for the evaluation of three dimensional residual stress states is demonstrated by studies of the effect of grinding on Armco-iron and a medium carbon steel. Although the penetration depth of the Cr-radiation employed in this study is only 5 microns, there is evidence of residual stresses normal to the surface normal and shear components. In the past it has been assumed that these stress components can be neglected. Shear stresses normal to the surface are small in Armco iron, but significant or - 60 MPa in steel. From the sign of the shears, the direction of final grinding can be determined. Cooling decreases the tensile stresses parallel to the surface in steel surprisingly, the opposite result is found in Armco-iron. Author

Author(s):

Doelle, H. ; Cohen, J. B.

Author Organization(s):

NORTHWESTERN UNIV EVANSTON IL DEPT OF MATERIALS SCIENCE

Descriptive Note:

Technical rept.,

Pagination:

0033

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

TR-24

Contract/Grant Number(s):

N00014-75-C-0580

Subject Terms

Joint Capability Areas:

JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2_Force Preparation; JCA_1_Force Support

Modernization Areas:

Fully Networked C3

Communities of Interest:

C4I

Descriptor(s):

*IRON, *SHEAR STRESSES, *RESIDUAL STRESS, *GRINDING, *CARBON STEELS, MACHINING, TENSILE STRESS, X RAY DIFFRACTION, COOLING, WEAR

Field(s)/Group(s):

Metallurgy and Metallography, Fabrication Metallurgy, Mechanics

Keyword(s):

Armco iron, WUNR031733

Report Date:

1979 Jun 13