[1]吳志剛,任曉兵,劉義農(nóng).Ni 50 Mn 38-x In 12 Fe x多晶合金的馬氏體轉(zhuǎn)變和磁轉(zhuǎn)變特性[J].中國(guó)材料進(jìn)展,2013,(2):056-60.[doi:10.7502/j.issn.1674-3962.2013.02.07]
WU Zhigang,REN Xiaobing,LIU Yinong.Martensitic and Magnetic Transformation Behavior of Ni 50 Mn 38-x In 12 Fe x Polycrystalline Alloys[J].MATERIALS CHINA,2013,(2):056-60.[doi:10.7502/j.issn.1674-3962.2013.02.07]
點(diǎn)擊復(fù)制
Ni 50 Mn 38-x In 12 Fe x多晶合金的馬氏體轉(zhuǎn)變和磁轉(zhuǎn)變特性(
)
中國(guó)材料進(jìn)展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
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- 期數(shù):
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2013年第2期
- 頁(yè)碼:
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056-60
- 欄目:
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特約研究論文
- 出版日期:
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2013-03-31
文章信息/Info
- Title:
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Martensitic and Magnetic Transformation Behavior of Ni 50 Mn 38-x In 12 Fe x Polycrystalline Alloys
- 作者:
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吳志剛; 任曉兵; 劉義農(nóng)
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(1.西安交通大學(xué)前沿科學(xué)與技術(shù)學(xué)院 多學(xué)科材料研究中心，陜西 西安 710049)
(2.西澳大利亞大學(xué)機(jī)械工程學(xué)院，澳大利亞 克勞利 WA6009)
- Author(s):
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WU Zhigang; REN Xiaobing; LIU Yinong
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(1.Multi Disciplinary Materials Research Center, Frontier Institute of Science and Technology, Xi an Jiaotong University, Xi an 710049, China)
(2.School of Mechanical Engineering, The University of Western Australia, Crawley WA6009, Australia)
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- 關(guān)鍵詞:
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形狀記憶合金; 馬氏體轉(zhuǎn)變; 磁特性; 金屬間化合物
- DOI:
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10.7502/j.issn.1674-3962.2013.02.07
- 文獻(xiàn)標(biāo)志碼:
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A
- 摘要:
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詳細(xì)研究了Ni 50 Mn 38-x In 12 Fe x (x=0, 3, 4, 5, 6)合金體系中Fe取代Mn對(duì)合金馬氏體相變行為及磁學(xué)性能的影響。發(fā)現(xiàn)當(dāng)x≤4時(shí)，合金表現(xiàn)出由B2結(jié)構(gòu)的奧氏體向正交結(jié)構(gòu)的馬氏體轉(zhuǎn)變的相變行為，而當(dāng)x ≥5時(shí)該相變被完全抑制。當(dāng)Fe對(duì)Mn的取代超過3%時(shí)，合金的顯微結(jié)構(gòu)中出現(xiàn)γ相，并發(fā)現(xiàn)其數(shù)量隨Fe含量的增加而增加。γ相的形成改變了合金基體相成分，進(jìn)而帶來(lái)了基體相e/a（每原子的電子濃度）值的變化，研究結(jié)果證明合金的一系列性能改變均與基體相e/a值的變化相關(guān)。第一，基體相e/a（每原子的電子濃度）值隨著Fe含量的增加而迅速減小，導(dǎo)致了合金馬氏體相變溫度、相變潛熱及相變熵變的降低。第二，F(xiàn)e的引入有效地增強(qiáng)了合金基體相的鐵磁性能，提高了合金的居里轉(zhuǎn)變溫度和合金的磁化強(qiáng)度。詳細(xì)闡述了Fe的引入是合金馬氏體相變及磁學(xué)性能變化的本質(zhì)原因。
- Abstract:
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The effect of Fe substitution for Mn on the martensitic and magnetic transformation behaviors of Ni50Mn38-xIn12Fex (x=0, 3, 4, 5, 6) polycrystalline alloys was investigated. A martensitic transformation from a B2 austenite to an orthorhombic martensite was observed with lower Fe contents (x≤4), while the transformation was completely suppressed with further increasing the Fe content (x≥5) of the alloys. Substitution of Fe for Mn at above 3%(x) introduced an fcc γ phase in the microstructure, the amount of which increased with increasing the Fe content. The γ phase influenced the composition of the matrix phase, as well as the e/a ratio, leading to a series change of the physical properties of the alloys. Firstly, the e/a ratio of the matrix phase decreased rapidly with increasing Fe content, resulting in the abrupt decrease of martensitic transformation temperature and enthalpy change. Secondly, Fe addition effectively increased the ferromagnetic ordering of the matrix phase, leading to the increase of the Curie transition temperatures and the magnetization of the alloys. The origin of the effect of Fe addition on changes in martensitic transformation and magnetic behaviour is discussed.
更新日期/Last Update:
2013-02-22