| 학회 |
한국재료학회 |
| 학술대회 |
2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 |
23권 2호 |
| 발표분야 |
D. 구조 재료 분과 |
| 제목 |
Hot deformation behaviors of Al-8.0Zn-2.5Mg-2.0Cu (wt. %) alloy |
| 초록 |
Hot compression test of Al-8.0Zn-2.5Mg-2.0Cu alloy was carried out on a thermo-mechanical simulator (Thermacmaster-Z) over the temperature range from 300ºC to 450ºC and strain rate from 0.001 s-1 to 1 s-1. The processing map was established to study on the workability of the alloy, and the processing map at the strain of 0.7 exhibited three stable domains with high efficiency (＞30%), which exhibited good hot workability for Al-8.0Zn-2.5Mg-2.0Cu alloy. The level of dynamic recrystallization increased with increasing of deformation temperature or decreasing of strain rate. The dynamic recrystallization (DRX) easily occurred at low ln Z values, and the dynamic recovery (DRV) was predominant at high ln Z values (ln Z higher than 26.788). Some fine DRX grains around large particles were presented after the hot deformation. Meanwhile, the P texture and R-cube texture were observed in the deformed samples, which indicated the particle stimulated nucleation (PSN) of recrystallization was also occurred in the alloy during hot deformation. |
| 저자 |
Zang Qian Hao1, 이윤수1, 김민석1, 김형욱1, Yu Hua Shun2
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| 소속 |
1재료(연), 2Shandong Univ. |
| 키워드 |
<P>Aluminium; Hot deformation behavior; Processing maps; Texture; Dynamic recrystallization</P>
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| E-Mail |
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