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�������պ����ѧѧ�� 2007, Vol. 33 Issue (06) :723-726    DOI:
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�޵�, �����, �����, ����*
�������պ����ѧ ���Ͽ�ѧ�빤��ѧԺ, ���� 100083
Quantitative relationship between impact property and dynamic compressive performance of Ti alloy
Cui Dan, Zhang Zhengang, Wu Guoqing, Huang Zheng*
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ Ϊ��ʶ�ѺϽ�ij�������������Ʒ�ʵĹ�ϵ,������֯����ͳ�Ʒ����ķ����о���Ti-3Al-5Mo-4.5V�ѺϽ���΢��֯�����Գ�����ܵ�Ӱ�����,��϶�̬ѹ����ļ��д���ȱ仯����,̽���������γɹ���������չ���Լ����������д����֮��Ĺ�ϵ.�������:�����˻��¶ȵ�����,��α��Ƭ����������Ӻ��С,�����γɹ�Ҳ�����������½�,��������չ��ȴ���ȼ�С������,����ܹ���������;�����ָ������ϵĶ�̬ѹ������δ���ֱ�Ȼ��ϵ,�����γɹ��붯̬ѹ����ļ��д���ȳɷ�������ϵ,��������չ������д�������������.
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Abstract�� To explore the relationship between impact property and cold upsetting finished product ratio of Ti alloy,the effect of microstructure parameter on impact property of Ti-3Al-5Mo-4.5V alloy was investigated systemically with quantitative statistical analysis method. The relationship among crack initiation energy, crack propagation energy, total impact energy and the width of shear band was analyzed combined with the variety of the width of shear band after dynamic compressive deformation. The result shows as follows. First, as anneal temperature rises, ��� platelet ratio(length/width) increases first and then decreases, crack initiation energy ascends first and then descends, while crack propagation energy diminishes first and then increases, and total impact energy ascends persistently. Second, there is no certain relationship between total impact energy and dynamic compressive performance; crack initiation energy is in inverse proportion to the width of shear band, while there is a positive correlation between the crack propagation energy and the width of shear band linearly.
Keywords�� Ti alloy   statistical   microstructure   impact property   shear band     
Received 2006-08-31;
About author: �� ��(1983-),��,����������,˶ʿ��,cuidan@mse.buaa.edu.cn.
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�޵�, �����, �����, ����.�ѺϽ��������붯̬ѹ�����ܼ�Ķ�����ϵ[J]  �������պ����ѧѧ��, 2007,V33(06): 723-726
Cui Dan, Zhang Zhengang, Wu Guoqing, Huang Zheng.Quantitative relationship between impact property and dynamic compressive performance of Ti alloy[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(06): 723-726
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