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| 02140cam 2200361zi 4500 |
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| 001 | 9.867929 |
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| 003 | CaOODSP |
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| 005 | 20221107162438 |
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| 006 | m o d f |
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| 007 | cr ||||||||||| |
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| 008 | 190201s1960 onc ot f|0| 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 041 | |aeng|bfre |
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| 043 | |an-cn--- |
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| 086 | 1 |aM38-1/68-1960E-PDF |
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| 100 | 1 |aMcGrath, J. T., |eauthor. |
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| 245 | 10|aMechanical and structural changes during the deformation of copper by fatigue / |cby J. T. McGrath and R. C. A. Thurston. |
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| 264 | 1|aOttawa, Ontario : |bDepartment of Mines and Technical Surveys, |c1960. |
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| 300 | |a1 online resource (iv, 20 pages) |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aMines Branch Research Report ; |vR 68 |
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| 500 | |a"July, 1960." |
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| 504 | |aIncludes bibliographic references. |
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| 520 | |a"The structural changes which take place in polycrystalline copper under the action of alternating cycles of torsion stress were studied, using the optical microscope and the X-ray diffraction camera, and an attempt was made to correlate them with changes in the shape of the cyclic stress-strain curve. It was found that the period of work-hardening was less than one per cent of the fatigue life, and that persistent surface markings, which are assumed to be incipient or actual microcracks, occur upon completion of work-hardening. X-ray diffraction patterns revealed considerable grain distortion at the completion of work-hardening in specimens cycled at a high strain amplitude This distortion became progressively less as the strain amplitude decreased"--Abstract, page i. |
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| 546 | |aIncludes abstract in French. |
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| 692 | 07|2gccst|aMetals |
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| 700 | 1 |aThurston, R. C. A., |eauthor. |
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| 710 | 1 |aCanada. |bDepartment of Mines and Technical Surveys. |
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| 710 | 1 |aCanada. |bMines Branch. |
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| 830 | #0|aResearch report (Canada. Mines Branch)|vR 68. |w(CaOODSP)9.855660 |
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| 856 | 40|qPDF|s3.85 MB|uhttps://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-68-1960-eng.pdf |
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