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Surface deformation behavior of beta solution treated and overaged Ti–6Al–4V during laser shock processing
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10.1063/1.2193036
/content/aip/journal/jap/99/10/10.1063/1.2193036
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/10/10.1063/1.2193036

Figures

Image of FIG. 1.
FIG. 1.

Schematic of specimen surface showing area examined in this study.

Image of FIG. 2.
FIG. 2.

Schematic of laser shock process.

Image of FIG. 3.
FIG. 3.

Large area microstructure maps obtained using (a) EBSD showing grain boundaries in black, and (b) 540 SEM backscatter electron images showing topographic variation. Grains with observable slip steps are identified in (a), and those identified with the same number but different letter are related to each other by a small rotation .

Image of FIG. 4.
FIG. 4.

(a) Slip steps observed on grains 2a and 2b displayed as the EBSD map grain boundaries overlaid on a SEM map section obtain from Fig. 2(b) AFM topographic map of boxed region in Fig. 4(a), with vectors , , and representing the slip trace normals. (c) Stereographic projection of crystallographic plane normals of known -titanium slip planes in grain 2b, showing that planes are the slip planes. Great circles are used to represent the slip trace normals. (d) Schematic of crystallographic plane traces parallel to slip steps in Fig. 3(b) identified using orientation information obtained from EBSD.

Image of FIG. 5.
FIG. 5.

(a) topographic AFM map of grain 3b with vectors and representing the slip trace normals. (b) Stereographic projection of crystallographic plane normals of known -titanium slip planes in grain 3b, showing that none of them are the slip planes in this grain. The slip planes were determined to be . Great circles are used to represent the slip trace normals.

Image of FIG. 6.
FIG. 6.

Inverse pole figure showing crystallographic plane normals parallel to specimen surface normal for (a) all grains with observed surface slip steps, (b) grains with slip plane traces, and (c) grains with slip plane traces. Values are multiple times random.

Image of FIG. 7.
FIG. 7.

Taylor factor calculation for and slip systems for all the grains in the region studied, with grain boundaries shown as white. Grain numbers are the same as used in Fig. 3(a). It can be seen that in general, the Taylor factor is lower for the grains with slip steps.

Image of FIG. 8.
FIG. 8.

EBSD map of area shown in Fig. 5(a) for grain 3b. Gray scale values represent average nearest neighbor misorientation as a function of location. Grain boundaries are shown as white lines. In the grains with slip steps, lattice rotation peaks are seen at the slip steps but not in the regions between. In the grain with no slip steps, lattice rotation peaks are distributed throughout.

Tables

Generic image for table
Table I.

Slip planes of steps observed on identified grains.

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/content/aip/journal/jap/99/10/10.1063/1.2193036
2006-05-24
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Surface deformation behavior of beta solution treated and overaged Ti–6Al–4V during laser shock processing
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/10/10.1063/1.2193036
10.1063/1.2193036
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