磁驱动形状记忆合金nimninco马氏体转变与磁性能研究.pdf

河北工业大学
硕士学位论文
磁驱动形状记忆合金NiMnIn(Co)马氏体转变与磁性能的研究
姓名:李贝
申请学位级别:硕士
专业:材料加工工程
指导教师:林晓娉
20090201
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MARTENSITIC AND IC TRANSFORMATION
BEHAVIORS IN NiMnIn(Co) IC
SHAPE MEMORY ALLOYS
ABSTRACT
Ni50Mn25+xIn25-xNi45Co5Mn25+xIn25-x+xIn25-x alloys were melting by
vacuum arc furnace under an argon atmosphere. The martensitic and ic behaviors of the
alloys were investigated by differential scanning calorimetry (DSC) , vibrating sample
ometry (VSM), X-ray diffraction (XRD) and scanning electron microscope (SEM). The
relationship positionelectron concentration and the martensitic transfomation
temperature were be studied. The article focused on the effect between position with the
martensite morphologies and the ic properties durning the reverse martensitic
transformation under ic field.
The results show that: The martensite transformation temperature of NiMnIn (Co) alloys
have close contact with position and electron concentration of the al