In-situ XRD

SPring-8 9 2014214@

ARB, HPT, ECAE 1mm

d-1/2

N. Tsuji et al., Scripta Mater.,47(2002),893, N. Kamikawa et al., Acta Materialia, 57(2009),4198)

Extra-Hardening

99%AlAA1100

ARB8cycle 1cycle 50% 8cycle6.4

ARB

99%AlA1100

ARB8cycle 1cycle 50%8cycle6.4

FE-SEM/EBSD

ARB+100, 30min

ARB+175,30min +225, 30min

ARB+175,30min +300, 30min

ARB

ND

RD

dt=260nm

dt=260nm

100

225

ND

RD

dt=960nm

300

300 dt=4.47mm

/ m-2

100 260nm 7.010.31 1013

225 960nm 2.990.25 1013

300 4.47mm 1.150.11 1013

99%AlAA1100

X

Williamson-Hall

Williamson-Hall 2cos/=0.9/D+2sin/ X 2 D

D

ARBWilliamson-Hall plot r=23e/Db

b

In-situ X

SPring-8, BL-19B2=0.496

8.310-4 s-1

3mm0.11mm IP

0.5 17 40

17

R6

6

RD

TD

5

In-situ X

IP

IP

(111)

(200)

(220)

(311)

(222)

IP2mm/s 4mm , 2s

In-situ

In-situ X

0.2% 296MPa 204MPa 78(27)MPa

In-situ

d-1/2

I I 0.2%

I

0.2%

I II

I II

I II III

I II III

=61013/m-2

I II III

I II III

0.2%

=31013/m-2

III II

I II III

I

0.2%

I

II

II

IIIII 1/d

II

v

=vb

v b

, b

II

II

II

II

II

II

II III

Hall-PetchExtra-Hardening

0.2%

d-1/2

Hall-PetchExtra-Hardening

0.2%

d-1/2

H-P

II

ARB In-situ X

1. I II III 2. I 3. II -1 4. II III