Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
권호 표지

Crystallization and Embrittlement of $Fe_{78}B_{13}Si_{9}$ Amorphous Alloy

$Fe_{78}B_{13}Si_{9}$ 비정질 합금의 결정화 거동과 취성 현상

  • Son, In-Jin (Department of Materials Engineering, Chonbuk National University Chonju)
  • Published : 1991.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

Crystallization and embrittlement of $Fe_{78}B_{13}Si_{9}$ amorphous alloy was investigated by differential scanning calorimetry, X-ray diffraction and transmission electron microscopy. The crystallization comprizes two exothermic processes. In the first crystallization stage, $\alpha$-(Fe, Si) dendrites are formed from the amorphous state, and in the second crystallization, $Fe_2B$ compounds are formed. An abrupt decrease of the fracture strain of the ribbon started from amorphous started annealed at about $340^{\circ}C$

$Fe_{78}B_{13}Si_{9}$ 비정질 합금의 결정화 거동과 취성 현상을 시차열량기 시험, x-선회절시험 및 투과 전자현미경 관찰을 통해서 조사 연구하였다. 결정화는 두단계의 발열반응으로 진행되었으며, 첫번째 단계에서는 비정질로부터 B.C.C. 구조인 $\alpha$-(Fe, Si)의 수지상이 생성되었고, 두번째 단계에서는 남아있던 비정질로부터 B.C.T 구조인 $Fe_2B$가 형성되었다. 에닐링 온도에 따른 시편의 파단과 변형율은 비정질 상태인 약 $340^{\circ}C$부터 급긱히 감소하였다.

Keywords

References

  1. Proc. of 4th International Conference on Rapidly Quenched Metals R. Hasegawa;G.E. Fish;V.R.V. Ramannan
  2. Metall. Trans. A v.20A no.63 H.H. Liebermann;J. Marti;R.J. Martis;C.P.Wong
  3. J. Japan Inst. Matals v.53 T. Yamasaki;Y. Ogino
  4. J. of Materals Science Letters v.7 J.C. Rawers;R.A. Mccune;A. Adams
  5. J. of Materials Science v.18 C.F. Chang;J. Marti
  6. J. Thermal Anal. v.13 J.A. Augis;J.E. Bennett
  7. Polymer v.11 T. Ozawa
  8. J. Am. Chem. Soc. v.79 H.J. Borchardt;F. Daniels
  9. J. Appl. Phys. v.47 F.E. Luborsky;J.L. Walter
  10. Encyclopedia of Materials Sience and Engineering. W. Parrish
  11. J. Japan. Inst. Metals v.54 T. Yamasaki;T. Honda;Y. Amemiya
  12. Constitution of Binary Alloys (27d ed.) M. Hansen
  13. Proc. 4th Int. Conf. on Rapidly Quenched Metals v.561 F.E. Luborsky;F. Baconi
  14. J. Appl. Phys. v.53 V.R.V. Ramannan;G.E.Fish
  15. Metallurgical Transactions v.20A H.H. Liebermann;J. Marti;R.J. Martis;C.P.Wong