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Microstructure and mechanical properties of copper subjected to cryogenic laser shock peening
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10.1063/1.3651508
/content/aip/journal/jap/110/8/10.1063/1.3651508
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/8/10.1063/1.3651508

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic of the laser shock peening process.

Image of FIG. 2.
FIG. 2.

Grain size of copper after annealing at 600 °C for an hour.

Image of FIG. 3.
FIG. 3.

Surface nanocrystallization after RT-LSP (left) and CLSP (right) of Copper.

Image of FIG. 4.
FIG. 4.

(Color online) Deformation twinning (as pointed by the arrows) after CLSP of copper.

Image of FIG. 5.
FIG. 5.

(Color online) Twinning and calculated slip stress for copper as a function of temperature and strain rate.

Image of FIG. 6.
FIG. 6.

Deformation twinning in Brass after RT-LSP; in (b) the diffraction pattern was taken from the (110) direction of the matrix, the two diffraction spots marked are from the twins.

Image of FIG. 7.
FIG. 7.

(Color online) Relative dislocation density in copper for non-peened, RT-LSP, and CLSP.

Image of FIG. 8.
FIG. 8.

(Color online) Representative DSC curves of the as-annealed, RT-LSP, and CLSP samples.

Image of FIG. 9.
FIG. 9.

(Color online) Comparison of hardness for the non-peened sample and the samples after RT-LSP and CLSP.

Image of FIG. 10.
FIG. 10.

(Color online) Relative dislocation density indicated by FWHM of the [311] peak, comparison between RT-LSP and CLSP after annealing at 200 °C for different times.

Image of FIG. 11.
FIG. 11.

(Color online) Surface strength stability at annealing at 200 °C for the as-received (without annealing) sample and the sample after RT-LSP and CLSP.

Image of FIG. 12.
FIG. 12.

(Color online) Nano-Indentation curves of the RT-LSP and the CLSP samples.

Image of FIG. 13.
FIG. 13.

(Color online) Engineering stress-strain curves for non-peened, RT-LSP, and CLSP samples.

Image of FIG. 14.
FIG. 14.

(Color online) Yield Stress, tensile strength and uniform elongation comparison for the non-peened sample, and the samples after RT-LSP and CLSP.

Tables

Generic image for table
Table I.

Constants in the ZA model.30

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/content/aip/journal/jap/110/8/10.1063/1.3651508
2011-10-19
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microstructure and mechanical properties of copper subjected to cryogenic laser shock peening
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/8/10.1063/1.3651508
10.1063/1.3651508
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