기계적합금화법에 의해 제조된 티타늄합금 분말 제조 및 주조용 티타늄합금의 제진특성
Damping Properties of Casting Ti alloys and fabrication of Ti alloy Powders by using Mechanical Alloying Method
진주간호보건전문대학논문집 1999년 22권 2호 p.215 ~ 230
KMID : 0647819990220020215
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차성수 ( ) - 진주보건대학 치기공과
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Abstract
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Microstructure and phase transformation of mechanically alloyed Ti-Ni(CU) powders for enhancing the damping properties were studied. The mixtures of elemental powders (Ti-50Ni, Ti-45Ni-5Cu) were mechanically alloyed by high energy ball mill. Mechanically alloyed Ti-Ni(Cu) powder was heat treated at the temperature up to 850´C for 1 hour in the 10-6 torn vacuum atmosphere for the crystallization and phase transformation to martensite. Specific damping capacity (SDS) using cantilever beam method was obtained by using a dynamic strain amplifier.
The results obtained were as follows;
1. TiNi(Cu) shape memory alloy powders were fabricated by mechanical alloying. So, the mixtures of elemental powders( Ti-50Ni and Ti-45Ni-5Cu) were mechanically alloyed(MA). MA was to engaged for 10 hours were formed amorphous phase and particles refinement.
2. Amorphous phase was crystallized to martensite(B19´ )and.austenite(B2) after heat treating for 1 hour at the temperature at 8501C, and TiN13 intermetallic compound was partially formed.
3. Specific damping capacity of Ti, Ti-50NIi and Ti-45Ni-5Cu casting alloys was related with the amount of martensite phase and the best result of damping capacity was Ti-45Ni-5Cu casting material.
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KeyWords
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원문 및 링크아웃 정보
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등재저널 정보
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