EDM surface characteristics and shape recovery ability of Ti 35.5Ni48.5Zr16 and Ni60Al 24.5Fe15.5 ternary shape memory alloys

S. F. Hsieh; Albert W.J. Hsue; S. L. Chen; M. H. Lin; K. L. Ou; P. L. Mao

doi:10.1016/j.jallcom.2013.03.111

EDM surface characteristics and shape recovery ability of Ti _35.5Ni_48.5Zr₁₆ and Ni₆₀Al _24.5Fe_15.5 ternary shape memory alloys

S. F. Hsieh, Albert W.J. Hsue, S. L. Chen, M. H. Lin, K. L. Ou, P. L. Mao

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

Electro-discharge craters and recast materials are observed in the electro-discharge machining (EDM) surface of Ti_35.5Ni _48.5Zr₁₆ and Ni₆₀Al_24.5Fe _15.5 alloys. The recast layer is composed of TiO, NiO, ZrO ₂, Fe₂O₃, Al₂O_3. The hardening effect near the outer surface for EDMed TiNiZr alloy originates from the surface oxides of the recast layer. The thickness of the recast layer increases upon growing pulse energy. The EDMed Ti_35.5Ni _48.5Zr₁₆ alloy still exhibits a good shape recovery, but the shape recovery is slightly reduced due to the depression of the recast layer. The material removal rate (MRR) of Ti_35.5Ni _48.5Zr₁₆ alloy is less than that of Ni₆₀Al _24.5Fe_15.5 alloy because of the larger θ × k_α value. A high discharge energy should have a larger and deeper craters, and a rougher surface. The surface roughness of the EDMed TiNiZr and NiAlFe SMAs is found to obey the empirical equation of Ra = C(I_P × τ_P)^β. Having a larger θ × K_α value, Ti_35.5Ni_48.5Zr₁₆ alloy has a lower Ra value than that of Ni₆₀Al_24.5Fe _15.5 alloy after electro-discharge machining.

Original language	English
Pages (from-to)	63-68
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	571
DOIs	https://doi.org/10.1016/j.jallcom.2013.03.111
Publication status	Published - Sept 15 2013

Keywords

Electro-discharge machining (EDM)
Roughness
TiNiZr shape memory alloys

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2013.03.111

Cite this

@article{4ebd66460ed040268db20348bfafbe91,

title = "EDM surface characteristics and shape recovery ability of Ti 35.5Ni48.5Zr16 and Ni60Al 24.5Fe15.5 ternary shape memory alloys",

abstract = "Electro-discharge craters and recast materials are observed in the electro-discharge machining (EDM) surface of Ti35.5Ni 48.5Zr16 and Ni60Al24.5Fe 15.5 alloys. The recast layer is composed of TiO, NiO, ZrO 2, Fe2O3, Al2O3. The hardening effect near the outer surface for EDMed TiNiZr alloy originates from the surface oxides of the recast layer. The thickness of the recast layer increases upon growing pulse energy. The EDMed Ti35.5Ni 48.5Zr16 alloy still exhibits a good shape recovery, but the shape recovery is slightly reduced due to the depression of the recast layer. The material removal rate (MRR) of Ti35.5Ni 48.5Zr16 alloy is less than that of Ni60Al 24.5Fe15.5 alloy because of the larger θ × kα value. A high discharge energy should have a larger and deeper craters, and a rougher surface. The surface roughness of the EDMed TiNiZr and NiAlFe SMAs is found to obey the empirical equation of Ra = C(IP × τP)β. Having a larger θ × Kα value, Ti35.5Ni48.5Zr16 alloy has a lower Ra value than that of Ni60Al24.5Fe 15.5 alloy after electro-discharge machining.",

keywords = "Electro-discharge machining (EDM), Roughness, TiNiZr shape memory alloys",

author = "Hsieh, {S. F.} and Hsue, {Albert W.J.} and Chen, {S. L.} and Lin, {M. H.} and Ou, {K. L.} and Mao, {P. L.}",

note = "Funding Information: The authors sincerely acknowledge the financial support of this research by the National Science Council (NSC), Republic of China , under Grant No. NSC 101-2221-E-151-009 . ",

year = "2013",

month = sep,

day = "15",

doi = "10.1016/j.jallcom.2013.03.111",

language = "English",

volume = "571",

pages = "63--68",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - EDM surface characteristics and shape recovery ability of Ti 35.5Ni48.5Zr16 and Ni60Al 24.5Fe15.5 ternary shape memory alloys

AU - Hsieh, S. F.

AU - Hsue, Albert W.J.

AU - Chen, S. L.

AU - Lin, M. H.

AU - Ou, K. L.

AU - Mao, P. L.

N1 - Funding Information: The authors sincerely acknowledge the financial support of this research by the National Science Council (NSC), Republic of China , under Grant No. NSC 101-2221-E-151-009 .

PY - 2013/9/15

Y1 - 2013/9/15

N2 - Electro-discharge craters and recast materials are observed in the electro-discharge machining (EDM) surface of Ti35.5Ni 48.5Zr16 and Ni60Al24.5Fe 15.5 alloys. The recast layer is composed of TiO, NiO, ZrO 2, Fe2O3, Al2O3. The hardening effect near the outer surface for EDMed TiNiZr alloy originates from the surface oxides of the recast layer. The thickness of the recast layer increases upon growing pulse energy. The EDMed Ti35.5Ni 48.5Zr16 alloy still exhibits a good shape recovery, but the shape recovery is slightly reduced due to the depression of the recast layer. The material removal rate (MRR) of Ti35.5Ni 48.5Zr16 alloy is less than that of Ni60Al 24.5Fe15.5 alloy because of the larger θ × kα value. A high discharge energy should have a larger and deeper craters, and a rougher surface. The surface roughness of the EDMed TiNiZr and NiAlFe SMAs is found to obey the empirical equation of Ra = C(IP × τP)β. Having a larger θ × Kα value, Ti35.5Ni48.5Zr16 alloy has a lower Ra value than that of Ni60Al24.5Fe 15.5 alloy after electro-discharge machining.

AB - Electro-discharge craters and recast materials are observed in the electro-discharge machining (EDM) surface of Ti35.5Ni 48.5Zr16 and Ni60Al24.5Fe 15.5 alloys. The recast layer is composed of TiO, NiO, ZrO 2, Fe2O3, Al2O3. The hardening effect near the outer surface for EDMed TiNiZr alloy originates from the surface oxides of the recast layer. The thickness of the recast layer increases upon growing pulse energy. The EDMed Ti35.5Ni 48.5Zr16 alloy still exhibits a good shape recovery, but the shape recovery is slightly reduced due to the depression of the recast layer. The material removal rate (MRR) of Ti35.5Ni 48.5Zr16 alloy is less than that of Ni60Al 24.5Fe15.5 alloy because of the larger θ × kα value. A high discharge energy should have a larger and deeper craters, and a rougher surface. The surface roughness of the EDMed TiNiZr and NiAlFe SMAs is found to obey the empirical equation of Ra = C(IP × τP)β. Having a larger θ × Kα value, Ti35.5Ni48.5Zr16 alloy has a lower Ra value than that of Ni60Al24.5Fe 15.5 alloy after electro-discharge machining.

KW - Electro-discharge machining (EDM)

KW - Roughness

KW - TiNiZr shape memory alloys

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U2 - 10.1016/j.jallcom.2013.03.111

DO - 10.1016/j.jallcom.2013.03.111

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SN - 0925-8388

VL - 571

SP - 63

EP - 68

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -