実験報告書様式（一般利用課題・成果公開利用）（ ※本報告書は英語で記述してください。ただし、産業利用課題として採択されている方は日本語で記述していただいても結構です。 ）提出日 Date of Report

MLF Experimental Report

2011/6/17

課題番号 Project No. 2010B0042

装置責任者 Name of responsible person
Kazuya Aizawa

実 験 課 題 名 Title of experiment: Instrumental Characteristics

装置名 Name of Instrument/（BL No.）

Comparison and Reliability Evaluation of TAKUMI and RESATAKUMI (BL19)

実験責任者名 Name of principal investigator

実施日 Date of Experiment

Koichi Akita

2010/12/14-2010/12/15

所属 Affiliation

2011/2/4-2011/2/5

JAEA
試料、実験方法、利用の結果得られた主なデータ、考察、結論等を、記述して下さい。（適宜、図表添付のこと）
Please report your samples, experimental method and results, discussion and conclusions. Please add figures andtables for better explanation.
1. 試料 Name of sample(s) and chemical formula, or compositions including physical form.
1. Austenite stainless steel, JIS SUS310, Bulk
2. Ferite/Martensite steel, JIS SCM440, Bulk
3. Aluminum alloy, JIS A7075, Bulk

2. 実験方法及び結果 （実験がうまくいかなかった場合、その理由を記述してください。）
Experimental method and results.

If you failed to conduct experiment as planned, please describe reasons.

Experimental method;
Tensile specimens were cutout from the materials by an electro discharge wire-cut machine. A
strain gage was glued on the sample surface in the loading direction. Tensile loads were applied
step-by-step on the sample

Table 1 Conditions of diffraction measurement.

using a tension/compression
loading device set on theExperiment datesample stage of TAKUMI.

Beam

Diffraction

profilesweremeasured at each loading
step. Results were comparedwith the data obtained by
the RESA-1. Condition ofdiffraction measurement isshown in Table 1.

TAKUMI
2010.11.5Pulsed neutron
Beam power: 120 kW

Mid. resolution mode (Δd/d = 0.28)
Diffraction condition d-range: 0.39 - 2.64 Å
Diffraction angle: 90 deg
Incident slit
Receiving slit
DetectorandView angle

Width: 3mm, Hight: 8mm
1D Scintillator (pair of 90 deg banks)
W 3 mm x H 200 mm/pixel
Per bank: hor.： ±15 deg, ver. ： ±15 deg

1RESA-1
2010.10.11
Continuous neutron
Reactor power: 20 MW
Monochromator: Asymm. Si 311
Wave length: 1.6 Å
Diffraction: a-Fe 211 (d = 1.17 Å)
Diffraction angle: 86 degWidth: 3mm, Hight: 10mm
Radial collimater, W 10 mm
21D-PSD, 100 × 100 mm
hor.： ±3 deg, ver.： ±3 deg

2. 実験方法及び結果（つづき） Experimental method and results (continued)
Results;
In this report, the results obtained on SCM440 steel samples were described as a representative example of theexperiment. Fig. 1 (a) - (c) show the measured lattice strains plotted against applied stress. Linearity of thestrain-stress relation was improved with increasing acquisition time. Standard deviation of the strain-stressrelation for 211 diffraction was decreased with increasing peak intensity as shown in Fig. 2. In this figure, theresult obtained by RESA-1 in JRR-3 was also plotted for comparison. Standard deviation was about 20 x 10-6
corresponding to 5 MPa in tensile stress at 1000 counts of the peak intensity for both TAKUMI and RESA-1.
The time required to store 1000 counts at the experimental condition was about 2 min. and 10 min. on TAKUMIand RESA-1, respectively. Fig. 3 shows the Young’s modulus obtained by the tensile tests. The measured values
were in good agreement with the theoretical values calculated by Kroner model except for 222 diffraction
showed very low peak intensity. Further experiments on the TAKUMI and RESA-1 are required to clarify thecharacteristics of the both diffractometers.
1(a) 10 min.

(b) 6 min.

(c) 1 min.

Fig. 1 Examples of (lattice strain) – (applied stress) relations of SCM440 measured by TAKUMI.

250
240

25RESA-1, 211
TAKUMI, 211

80

230

2015604010205E (Measured), GPa

100Stress, MPa

Std. dev. of S-S relation, x 10-6120

222220210

110

200220321

190

211
310

18010 min1700001000

2000

3000

4000

150
150

5000

170

190

210

230

250

E (Kröner model), GPa

Peak intensity of 211, counts

Fig. 2 Standard deviations for strain-stress relation.

1 min200160Fig. 3 Comparison between measured and calculated
values of Young’s modulus (TAKUMI).
2