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powder compression
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  粉末压缩
    Polycrystalline alloy Ni 52Mn 24.4Ga 23. 6 was prepared by repeated vacum induction melting, and bonded Ni 52Mn 24.4Ga 23.6 magnets were prepared by powder compression method.
    采用真空感应熔炼法制备了多晶Ni52 Mn2 4 4 Ga2 3 6 合金 ,用粉末压缩压制的方法制作粘结Ni52Mn2 4 4 Ga2 3 6 磁体 ;
短句来源
    Bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were prepared by powder compression method, and the effects of external stress and magnetic field on the martensitic transformation of bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were discussed by X-ray diffraction.
    采用粉末压缩压制的方法制备了粘结Ni52 Mn2 4 .4 Ga2 3.6 磁体 ; 通过X射线衍射分析 ,讨论了外应力场和磁场对粘结Ni52 Mn2 4 .4 Ga2 3.6磁体马氏体相变的影响 ;
短句来源
    Polycrystalline alloy Ni_(52)Mn_(24.4)Ga_(23.6) was prepared by repeated induction melting and bonded Ni_(52)Mn_(24.4)Ga_(23.6) magnets were prepared by powder compression method.
    真空感应熔炼法制备了多晶Ni52Mn24.4Ga23.6合金,利用粉末压缩压制的方法制备了粘结Ni52Mn24.4Ga23.6磁体。
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  powder compression
Fabrication of foamable precursors by powder compression and induction heating process
      
Evaluation of mechanical properties of porous 6061 alloys fabricated by the powder compression and induction heating process
      
Novel principles of calculation and analysis of powder compression
      
Principles and Application of Ultrasound in Pharmaceutical Powder Compression
      
Thus the first part of this review comprises the theory of powder compression of individual substances, compression parameters, compression equations, and mechanical properties of compacts, including compact strength tests and compact hardness tests.
      
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Polycrystalline alloy Ni 52Mn 24.4Ga 23. 6 was prepared by repeated vacum induction melting, and bonded Ni 52Mn 24.4Ga 23.6 magnets were prepared by powder compression method. The e ffects of different moulding and annealing processes on the microstructure and p roperties of Ni 52Mn 24.4Ga 23.6 alloy were investigated by dif ferential scanning calorimetry(DSC) analysis, optical microscopy and scanning mi croscope. The results show that coarse grains can be obtained at low cooling...

Polycrystalline alloy Ni 52Mn 24.4Ga 23. 6 was prepared by repeated vacum induction melting, and bonded Ni 52Mn 24.4Ga 23.6 magnets were prepared by powder compression method. The e ffects of different moulding and annealing processes on the microstructure and p roperties of Ni 52Mn 24.4Ga 23.6 alloy were investigated by dif ferential scanning calorimetry(DSC) analysis, optical microscopy and scanning mi croscope. The results show that coarse grains can be obtained at low cooling rat e. The fixed martensite transformation temperature of the alloy is obtained and the nucleation and growth of martensite of Ni 52Mn 24.4Ga 23.6 alloy is promoted by two-step annealing process.

采用真空感应熔炼法制备了多晶Ni52 Mn2 4 4 Ga2 3 6 合金 ,用粉末压缩压制的方法制作粘结Ni52Mn2 4 4 Ga2 3 6 磁体 ;通过显微组织观察和差热分析 (DSC)的方法研究了不同的浇铸方式和退火工艺对多晶Ni52 Mn2 4 4 Ga2 3 6 合金铸锭组织和性能的影响。结果表明 ,缓慢冷却的合金液能得到晶粒粗大的合金铸锭 ;两步退火工艺能使合金铸锭具有确定的马氏体转变点 ,并促进马氏体变体的形核和长大。

Polycrystalline alloy Ni_ 52Mn_ 24.4Ga_ 23.6 was prepared by repeated induction melting and was observed by means of DSC analysis, optical microscopy and scanning microscope. Bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were prepared by powder compression method, and the effects of external stress and magnetic field on the martensitic transformation of bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were discussed by X-ray diffraction. Magnetic-induced strains (MFIS) of bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets...

Polycrystalline alloy Ni_ 52Mn_ 24.4Ga_ 23.6 was prepared by repeated induction melting and was observed by means of DSC analysis, optical microscopy and scanning microscope. Bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were prepared by powder compression method, and the effects of external stress and magnetic field on the martensitic transformation of bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were discussed by X-ray diffraction. Magnetic-induced strains (MFIS) of bonded Ni_ 52Mn_ 24.4Ga_ 23.6 magnets were measured. The results show that saturated MFIS with an expanse of 150ppm can be obtained by applying a magnetic field of about 1.2T at room temperature.

真空感应熔炼法制备了多晶Ni52 Mn2 4 .4 Ga2 3.6 合金 ,对多晶合金进行了DSC分析和显微组织观察 ;采用粉末压缩压制的方法制备了粘结Ni52 Mn2 4 .4 Ga2 3.6 磁体 ;通过X射线衍射分析 ,讨论了外应力场和磁场对粘结Ni52 Mn2 4 .4 Ga2 3.6磁体马氏体相变的影响 ;测量了粘结Ni52 Mn2 4 .4 Ga2 3.6 磁体在磁场下的磁诱发应变。结果表明 :室温时粘结磁体在 1.2T的磁场下能产生 15 0ppm的饱和伸长应变。

Polycrystalline alloy Ni_(52)Mn_(24.4)Ga_(23.6) was prepared by repeated induction melting and bonded Ni_(52)Mn_(24.4)Ga_(23.6) magnets were prepared by powder compression method. The morphology, grain size, martensite transformation temperature and thermal hysteresis were investigated by means of DSC, XRD and SEM. The effects of external stress and magnetic field on martensitic transformation of bonded Ni_(52)Mn_(24.4)Ga_(23.6) magnets were discussed. The results show that a martensitic phase transition...

Polycrystalline alloy Ni_(52)Mn_(24.4)Ga_(23.6) was prepared by repeated induction melting and bonded Ni_(52)Mn_(24.4)Ga_(23.6) magnets were prepared by powder compression method. The morphology, grain size, martensite transformation temperature and thermal hysteresis were investigated by means of DSC, XRD and SEM. The effects of external stress and magnetic field on martensitic transformation of bonded Ni_(52)Mn_(24.4)Ga_(23.6) magnets were discussed. The results show that a martensitic phase transition to 5M martensite occurs at 18 ℃ on cooling. When bonded magnet is compacted, internal stress will lead to the appearance of the intermartensitic transformation, and the corresponding sequence is from (5M) to 7M, which has some preferential orientations. When the stress-induced 7M martensite is annealed at 180 ℃ for 3 h, it will revert to (5M). But the preferential orientations of martensitic variants are kept to some extent. During the nucleating and growth of the stress-induced 7M martensite, external magnetic field will contribute to the nucleating and growth of favorable variants of 7M martensite.

真空感应熔炼法制备了多晶Ni52Mn24.4Ga23.6合金,利用粉末压缩压制的方法制备了粘结Ni52Mn24.4Ga23.6磁体。通过DSC,XRD,SEM等手段分析了多晶合金的组织形态、晶粒大小、马氏体转变温度及相变热滞后温度,讨论了外应力场和磁场对粘结Ni52Mn24.4Ga23.6磁体马氏体相变的影响。结果表明:该合金在18℃时发生热马氏体相变,生成5M马氏体;在粘结磁体的制备过程中,在内应力作用下,合金中的5M马氏体发生马氏体间相变,生成具有一定的择优取向的7M马氏体;应力诱发的7M马氏体在180℃保温3h后冷却到室温下时又回复为5M马氏体,但此时5M马氏体保留一定的择优取向;在应力诱发的7M马氏体形核和长大过程中施加外磁场,能进一步促进7M马氏体的择优生长。

 
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