Micros tructure and Strength of B 2 ~ 0rdered NiAl(Ta) containing Ni2Al Precipitates

• 발행기관: 호서대학교 공업기술연구소
• 저자명: Chang 一 Suk Hanf
• 간행물 정보: 『공업기술연구 논문집』제33권 제1호, 8~13쪽, 전체 6쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2014.06.30

영문 초록

Precipitation of Ni2Al in supersaturated NiAl containing Ta and corresponding hardening have been investigated by hardness measurements and by transmission electron microscope observations. Selected area electron diffraction, high resolution electron microscopy and energy dispersive X-ray spectrometer analysis have shown that the Ni 2 Al with a hexagonal structure precipitates coherently in the B2~NiAl matrix. Ni 2 Al is an ordered phase with a u nit cell parameter, aNi 2 Ai= -\/2 aNiAi and CNi 2 Ai= V공aNiAi. The orientation relationship between the Ni 2 Al precipitate and the B2-NiAl matrix is (0001)Ni 2 Ai//(111)niai a n d 〔l l5 o 〕Ni2Ai//U 1 0 〕 NiAi. NiAl hardens appreciably by the precipitation of Ni 2 Al phase.

목차

I. INTRODUCTION

II. EXPERIMENTAL PROCEDURES

III . RESULTS AND DISCUSSION

IV . CONCLUSION

키워드

Intermetallic Compound Precipitation Hardening TEM