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This paper focuses on the Fe59.5Ni28Al11.5Ta1 memory alloy, in which the effects of different aging treatments on microstructure and properties of the rolled alloy are investigated by metallurgical microscope, X-ray diffraction, SEM, EDS and pressure test machine. Results show that, because of aging treatment, precipitation of γ’ and β’ phase strengthens the austenitic matrix. With the increase of aging time at 600 ℃, the comprehensive analysis of pseudoelasticity curve, shows that the stress-induced martensite critical stress of the aging state of the alloy decreases first and then increases; the alloy compressive strength, the recoverable strain and the hardness increase first and then decrease, Besides, the alloy residual strain is first decreased and then increased. When the aging time is 60 h, the alloy compressive strength is the maximum, up to 1306 MPa, the alloy recoverable deformation is the maximum, reaching 14.9%, the hardness of the alloy is also the largest, but the alloy residual strain is relative minimum. With the increase of aging time, alloy maximum strain decreases gradually, and the plasticity of the alloy also decreases gradually. The properties of the shape memory alloy are influenced by the particle size, its distribution, volume fraction, of precipitate phase etc.
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Keywords:
- Fe59.5Ni28Al11.5Ta1 /
- aging treatment /
- pseudoelasticity /
- hardness
[1] Fu Y, Du H, Huang W, Zhang S, Hu M 2004 Sens. Actuators A 112 395
[2] Maki T, In: Otsuka K, Wayman CM 1998 Shape memory materials (Cambridge: Cambridge University Press) p117
[3] Xu Z Y 1980 Martensitic Transformation and Martensite (Beijing: Science Press) p442 (in Chinese) [徐祖耀 1980 马氏体相变与马氏体 (北京: 科学出版社) 第442页]
[4] Li G, Lv Z C 2009 Acta Phys. Sin. 58 2746 (in Chinese) [李广, 吕兆承 2009 58 2746]
[5] Zhou Y, Wang H B, Wang G P 2011 Acta Phys. Sin. 60 107501 (in Chinese) [周英, 王海波, 王古平 2011 60 107501]
[6] Gong C W, Wang Y N, Yang D Z 2006 Acta Phys. Sin. 55 2877 (in Chinese) [宫长伟, 王佚农, 杨大智 2006 55 2877]
[7] Fang D N, Lu W, Yan W Y 1998 Acta Mater. 47 269
[8] Hao S, Takayama T, Ishida K, Nishizawa T 1984 Metall. Trans. A 15 1819
[9] Maki T, Kobayashi K, Minato M, Tamura I 1984 Scripta Metall. 18 1105
[10] Tanaka Y, Himuro Y, Kainuma R, Sutou Y, Omori T, Ishida K 2010 Science 327 1488
[11] Dong Z Z, Liu W X, Chen J M 2002 Mater. Sci. Forum 2 407
[12] Lu J, Luo F H 2010 Rare Met. Mater. Eng. 39 1989 (in Chinese) [卢静, 罗丰华 2010 稀有金属材料与工程 39 1989]
[13] Li N 2002 J. Funct. Mater. 33 621 (in Chinese) [李宁 2002 功能材料 33 621]
[14] Horton J A, Liu C T, George E P 1995 Mater. Sci. Eng. A 192 873
[15] Wu G H, Dai X F, Liu H Y 2006 Acta. Phys. Sin. 55 2534 (in Chinese) [吴光恒, 代学芳, 刘何燕 2006 55 2534]
[16] Kainuma R, Imano S, Ohtani H 1996 Intermetallics 4 37
[17] Huang B Y 2008 Solid Phase Transformations in Alloys (Changsha: Central South University Press) p302 (in Chinese) [黄伯云 2008 合金固态相变 (长沙: 中南大学出版社) 第302页]
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[1] Fu Y, Du H, Huang W, Zhang S, Hu M 2004 Sens. Actuators A 112 395
[2] Maki T, In: Otsuka K, Wayman CM 1998 Shape memory materials (Cambridge: Cambridge University Press) p117
[3] Xu Z Y 1980 Martensitic Transformation and Martensite (Beijing: Science Press) p442 (in Chinese) [徐祖耀 1980 马氏体相变与马氏体 (北京: 科学出版社) 第442页]
[4] Li G, Lv Z C 2009 Acta Phys. Sin. 58 2746 (in Chinese) [李广, 吕兆承 2009 58 2746]
[5] Zhou Y, Wang H B, Wang G P 2011 Acta Phys. Sin. 60 107501 (in Chinese) [周英, 王海波, 王古平 2011 60 107501]
[6] Gong C W, Wang Y N, Yang D Z 2006 Acta Phys. Sin. 55 2877 (in Chinese) [宫长伟, 王佚农, 杨大智 2006 55 2877]
[7] Fang D N, Lu W, Yan W Y 1998 Acta Mater. 47 269
[8] Hao S, Takayama T, Ishida K, Nishizawa T 1984 Metall. Trans. A 15 1819
[9] Maki T, Kobayashi K, Minato M, Tamura I 1984 Scripta Metall. 18 1105
[10] Tanaka Y, Himuro Y, Kainuma R, Sutou Y, Omori T, Ishida K 2010 Science 327 1488
[11] Dong Z Z, Liu W X, Chen J M 2002 Mater. Sci. Forum 2 407
[12] Lu J, Luo F H 2010 Rare Met. Mater. Eng. 39 1989 (in Chinese) [卢静, 罗丰华 2010 稀有金属材料与工程 39 1989]
[13] Li N 2002 J. Funct. Mater. 33 621 (in Chinese) [李宁 2002 功能材料 33 621]
[14] Horton J A, Liu C T, George E P 1995 Mater. Sci. Eng. A 192 873
[15] Wu G H, Dai X F, Liu H Y 2006 Acta. Phys. Sin. 55 2534 (in Chinese) [吴光恒, 代学芳, 刘何燕 2006 55 2534]
[16] Kainuma R, Imano S, Ohtani H 1996 Intermetallics 4 37
[17] Huang B Y 2008 Solid Phase Transformations in Alloys (Changsha: Central South University Press) p302 (in Chinese) [黄伯云 2008 合金固态相变 (长沙: 中南大学出版社) 第302页]
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