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| 1 | Magnetic field-induced reversible actuation using ferromagnetic shape memory alloys 显示文摘 | Yuanchang Liang Yuji Sutou Taishi Wada | 2003 | Scripta Materialia2003，48，： | 1 |
| 2 | Ordering, martensitic and ferromagnetic transformations in Ni-Al-Mn Heusler shape memory alloys 显示文摘 | Ryosuke Kainuma Fumihiko Gejima Yuji Sutou | 2000 | Materials Transactions JIM2000，41，8： | 1 |
| 3 | Abnormal Grain Growth Induced by Cyclic Heat Treatment显示文摘 | Toshihiro Omori Tomoe Kusama Shingo Kawata Ikuo Ohnuma Yuji Sutou Yoshikazu Araki Kiyohito Ishida Ryosuke Kainuma | 2013 | 2013 (6153)2013，，6153： | 1 |
| 4 | Rate-dependent response of superelastic Cu–Al–Mn alloy rods to tensile cyclic loads显示文摘 | Yoshikazu Araki Nao Maekawa Toshihiro Omori Yuji Sutou Ryosuke Kainuma Kiyohito Ishida | 2012 | Smart Materials and Structures2012，，3： | 1 |
| 5 | 高强度低密度Fe-20Mn-Al-C基合金显示文摘在室温下以硬度、冷加工性和拉伸试验研究了Fe-20Mn-(10-14)Al-(0-1.8)C(wt%)四元合金和Fe-20Mn-(10-14)Al-(0.75-1.8)C-5Cr(wt%)五元合金的机械性能,四元系和五元系中的γ(fcc)合金密度低于7.0 g/cm^3,具有极好的韧性,其硬度和拉伸强度随Al和C含量的增加而提高,γ+α(bcc)双相合金通过控制α体积分数可以得到高的强度,由TEM观察确认Al和C含量高的合金具有高硬度和高强度的原因是由于从退火温度开始冷却过程中析出了钙钛矿结构的k型碳化物。Fe-20Mn-11Al-1.8C-5Cr合金的密度为6.51 g/cm^3,表现出大于180 MPa·cm^3/g高的特殊强度和40%的极好延伸率,Fe-20Mn-Al-C(-5Cr)合金与常用钢相比具有高的特殊强度。 | Yuji SUTOU 乔林锁 | 2014 | 现代冶金(内蒙古)2014，0，1： | 1 |
| 6 | Martensitic transformation and shape memory effect in ausaged Fe-Ni-Si-based alloys显示文摘It is well known that the morphologies of the α’ martensite formed from the γ phase in ferrous alloys are classified into five types of lath, butterfly, (225)A type plate,lenticular and thin-plate. Among those α’ martensites, only the thin-plate martensite,which is characterized by containing a high density of transformation twins, has a potential of exhibiting a perfect shape memory (SM) effect.Recently the present authors found in Fe-Ni-Si alloys that the thin-plate martensite is formed by the introduction of fine and coherent γ’-(Ni,Fe)3Si particles with a L12 ordered structure in the austenite matrix due to ausaging. In the present study, the SM properties of the ausaged Fe-Ni-Si alloys with the thin-plate martensite are investigated by a conventional bending-test. The effects of the addition of Co to the Fe-Ni-Si alloys on the martensitic transformation and the SM properties are also investigated. It is shown that while the ausaged Fe-Ni-Si ternary alloys exhibit an imperfect SM effect due to reverse transformation from stress-induced thin-plate martensite to austenite, the SM properties are improved by the addition of Co. An almost perfect SM effect is confirmed in the Fe-Ni-Si-Co alloys by heating to 1 100 ℃ after deformation at -196 ℃. | 田中优树 HIMURO Yoshiyuki SUTOU Yuji KAINUMA Ryosuke ISHIDA Kiyohito | 2005 | 材料与冶金学报2005，4，2： | 0 |
| 7 | Micro catheter using Ti-Mo-Sn shape memory alloy tube显示文摘Recently, minimally invasive surgeries using guide-wire, catheter, stent etc. have spread rapidly as the diagnosis and the medical treatment for a cancer, a disease in a circulatory organ etc. Currently, further maneuverability and functionability of those devices are strongly desired in order to be used widely and safely. Although Ti-Ni shape memory alloys have been used in medical devices such orthodontic wire, guide-wire, it has been suspected that Ni is allergenic and carcinogenic to the human body. Thus the development of Ni-free shape memory alloys has been strongly required. Recently, several Ni-free beta-titanium alloys such as Ti-Mo-Al, Ti-Mo-Ga, Ti-Nb-Al have been developed as new-type shape memory alloys. We have been studying Ti-Mo based beta-titanium alloys and Ti-Mo-Sn alloy has constantly super elasticity of 3%.The purpose of present study is to propose the micro catheter with thin wall and high flexibility using To-Mo-Sn alloys tube on the basis of its mechanical properties. | 山口清 SUTOU Yuji TAKAGI Takamitsu MAESHIMA Takashi NISHIDA Minoru | 2005 | 材料与冶金学报2005，4，2： | 0 |
| 8 | FCC/HCP martensitic transformation and shape memory effect in Co-Al binary system显示文摘It is known that pure Co undergoes martensitic transformation from γ phase (fcc) to ε phase (hcp) by the movement of a/6<112> Shockley partial dislocations at around 400 ℃, however, there have been few systematic works on the SM effect in Co and Co-based alloys. In this study, the fcc/hcp rnartensitic transformation and the SM effect were investigated in Co-A1 binary alloys(mole fraction of Al=0-16%). The γ/ε rnartensitic transformation temperatures were found from the DSC measurements to decrease with increasing Al content, while the transformation temperature hystereses were observed to increase from 60℃ at x(Al)=0 to 150℃ at x(Al) = 16%. The SM effect evaluated by a conventional bending test was enhanced by the addition of Al over 4% (mole fraction) and Co-Al alloys containing over 10%(mole fraction) exhibit a good SM effect associated with the hcpfee → reverse transformation above 200℃. The SM effect was significantly improved by precipitation of β (I32) phase and the max[real shape recovery strain of 2.2 % was obtained, which can be explained by precipitation hardening. The crystallographic orientations between the β, εand γ phases were also determined. Finally, the magnetic properties were investigated and it was found that the Curie temperature and saturation magnetization of Co-14% Al(mole fraction) are 690℃ and 120 emu/g, respectively. It is concluded that the Co-A1 alloys hold promise as new high-temperature and ferromagnetic SM alloys. | 大森俊洋 SUTOU Yuji OIKAWA Katsunari KAINUMA Ryosuke ISHIDA Kiyohito | 2005 | 材料与冶金学报2005，4，2： | 0 |
| 9 | Martensitic and magnetic transformations of Ni-Ga-Fe-Co ferromagnetic shape memory alloys显示文摘Ferromagnetic shape memory alloys (FSMAs) such as NiMnGa, FePd and FePt are attractive as a new magnetic actuator material. They show a large magnetic-field-induced strain of 3% 9% due to the variant rearrangement. Recently, the present authors have reported that in the Ni-Ga-Fe alloy the martensitic transformationfrom the B2 and/or the L21 structures into a seven-layer or five-layer modulated structure occurs upon cooling. In this alloy system, however, it is impossible to obtain a martensite phase at RT with a Curie temperature (TC) higher than 100 ℃. In this work,the effects of substitution of Co for Ni on the martensitic and magnetic transformations,crystal structures and phase equilibria in Ni-Ga-Fe alloys were studied.Ni-Ga-Fe-Co alloys were prepared by induction melting under an argon atmosphere.Small pieces of specimens were taken from the ingot and homogenized at 1433 K for 24 h followed by quenching in water. The obtained specimens were aged at 773 K for 24 h and then quenched. The compositions of each phase were determined by energy dispersion X-ray spectroscopy (EDX). The martensitic transformation temperatures and TC were measured by differential scanning calorimetry (DSC) and vibrating sample magnetometer (VSM) measurement. The crystal structure of martensite phase was observed by X-ray diffractmeter (XRD) and transmission electron microscope (TEM).The Curie temperature TC was increased with increasing Co content while the martensitic transformation temperature slightly decreased. In the Ni54-x Ga27 Fe19 Cox ,TC increases from 303 K to 408 K with increasing Co content from x=0 to x=6. The crystal structure of the martensite phase and the phase equiribria in the Ni-Fe-Ga-Co alloys will be also presented. | 今野阳介 OIKAWA Katsunari OMORI Toshihiro SUTOU Yuji KAINUMA Ryosuke ISHIDA Kiyohito | 2005 | 材料与冶金学报2005，4，2： | 0 |
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