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Online since: February 2017
Authors: Francisco Manuel Braz Fernandes, Alexandru Alexa, Petrică Alexandru, Octavian Potecaşu, Florentina Potecaşu
Introduction
Ni-Ti alloys, belonging to the group of alloys with shape memory, are nowadays particularly important because of their potential, particularly for their usage in cutting-edge fields such as biomedical engineering systems, nanoelectronics, microelectromechanical systems or bio complex and optoelectromechanics.
In the latest years two new processing methods by powder metallurgy called MARFOS (mechanically activated reactive forging synthesis) and MARES (mechanically activated reactive extrusion synthesis) have been successfully applied to produce NiTi alloy bulk and are considered promising techniques for producing intermetallic compounds in bulk [8].
Vacuum induction melting of Ni Ti shape memory alloys in graphite crucible, Materials Science and Engineering, Volume 465, Issues 1–2, 15 September 2007, Pages 44–48
High quality vacuum induction melting of small quantities of NiTi shape memory alloys in graphite crucibles, Journal of Alloys and Compounds, Volume 385, Issues 1–2, 28 December 2004, Pages 214–223
Bujoreanu, “A Study of Martensite Formation in Powder Metallurgy Fe-Mn-Si-Cr-Ni Shape Memory Alloys,” Mater.
In the latest years two new processing methods by powder metallurgy called MARFOS (mechanically activated reactive forging synthesis) and MARES (mechanically activated reactive extrusion synthesis) have been successfully applied to produce NiTi alloy bulk and are considered promising techniques for producing intermetallic compounds in bulk [8].
Vacuum induction melting of Ni Ti shape memory alloys in graphite crucible, Materials Science and Engineering, Volume 465, Issues 1–2, 15 September 2007, Pages 44–48
High quality vacuum induction melting of small quantities of NiTi shape memory alloys in graphite crucibles, Journal of Alloys and Compounds, Volume 385, Issues 1–2, 28 December 2004, Pages 214–223
Bujoreanu, “A Study of Martensite Formation in Powder Metallurgy Fe-Mn-Si-Cr-Ni Shape Memory Alloys,” Mater.
Online since: February 2011
Authors: Jian Zhong Cui, Jin Tao Li, Guang Ming Xu
The aim of this work is to study the effect of magnetostatic field on the microstructure of 5005 aluminum alloy sheet.
During solidification of interlayer, many compounds and precipitated phase are formed.
Hunt: Journal of Materials Processing Technology Vol. 55(1995), p.76–84
Edmonds: Journal of Materials Processing Technology Vol. 83(1998), p.1-13
Cui: Chinese Journal of Rare Metals Vol. 28(2004), p.89-92, In Chinese
During solidification of interlayer, many compounds and precipitated phase are formed.
Hunt: Journal of Materials Processing Technology Vol. 55(1995), p.76–84
Edmonds: Journal of Materials Processing Technology Vol. 83(1998), p.1-13
Cui: Chinese Journal of Rare Metals Vol. 28(2004), p.89-92, In Chinese
Online since: July 2017
Authors: Maksim A. Esikov, Anatoliy A. Bataev, Tatyana Zimoglyadova, Lilia I. Shevtsova, Vyacheslav I. Mali, Veronika V. Sun Shin Yan, Danil A. Nemolochnov
The properties of the intermetallic compounds Ni3Al and NiAl [1-3]
Parameters
Ni3Al
NiAl
ρ [g/cm3]
~ 7.5
~ 5.35
Tm.
This fact has a great value at processing of intermetallic alloys and compounds, which have increased ductility and durability characteristics at temperatures up to 1000 °C [7-9].
For obtaining materials based on intermetallic compounds, the spark plasma sintering (SPS) method is used.
Reflexes corresponding to boron compounds were not detected.
Kositsyna, Phase and structural transformations in the monoaluminide nickel-based alloys, Russian Metal Physics. 9 (2008) 195-258 (in Russian).
This fact has a great value at processing of intermetallic alloys and compounds, which have increased ductility and durability characteristics at temperatures up to 1000 °C [7-9].
For obtaining materials based on intermetallic compounds, the spark plasma sintering (SPS) method is used.
Reflexes corresponding to boron compounds were not detected.
Kositsyna, Phase and structural transformations in the monoaluminide nickel-based alloys, Russian Metal Physics. 9 (2008) 195-258 (in Russian).
Online since: October 2010
Authors: Ming Gang Zhang, Xiao Ping Luo, Lan Ting Xia
Therefore, the aim of this study was to determine whether Si
phase precipitation morphology with increasing silicon content could bring about the same change as
that in Al-Si binary alloys and whether the Si phase modification process in the Al-Si alloys could be
used for the silicon containing ZA27 alloys.
The Si content in the test Al-Si alloys were 13% - 22% and 4% - 8% in the ZA27 alloys.
This is because Al and P in the liquid alloy forms high melting point AlP compounds, which serves as seed for crystallization.
The first modification process aims to firstly produce an Al-Si binary inter-alloy after modification at 900 °C, and then the Si containing ZA27 alloy is prepared.
Cai:Materials Journal,VOL.5(1994 ),p.30( In Chinese).
The Si content in the test Al-Si alloys were 13% - 22% and 4% - 8% in the ZA27 alloys.
This is because Al and P in the liquid alloy forms high melting point AlP compounds, which serves as seed for crystallization.
The first modification process aims to firstly produce an Al-Si binary inter-alloy after modification at 900 °C, and then the Si containing ZA27 alloy is prepared.
Cai:Materials Journal,VOL.5(1994 ),p.30( In Chinese).
Online since: September 2016
Authors: Evgeny A. Trofimov, Olga V. Samoilova
Bronzes of the kind are classified as precipitation hardening alloys [1–4].
Belova, Industrial Non-Ferrous Metals and Alloys, third ed., Metallurgy Publ., Moscow, 1974
Huang, Phase equilibria of the Cu–Ni–Si system at 700 °С, Journal of Alloys and Compounds. 509 (2011) 9776-9781
Bock, New high-temperature copper alloys, Journal of Materials Engineering and Performance. 5 (1996) 695-698
Shen, Evaluation of nanoscaled precipitates in a Cu–Ni–Si–Cr alloy during aging, Journal of Alloys and Compounds. 614 (2014) 189-195
Belova, Industrial Non-Ferrous Metals and Alloys, third ed., Metallurgy Publ., Moscow, 1974
Huang, Phase equilibria of the Cu–Ni–Si system at 700 °С, Journal of Alloys and Compounds. 509 (2011) 9776-9781
Bock, New high-temperature copper alloys, Journal of Materials Engineering and Performance. 5 (1996) 695-698
Shen, Evaluation of nanoscaled precipitates in a Cu–Ni–Si–Cr alloy during aging, Journal of Alloys and Compounds. 614 (2014) 189-195
Online since: May 2024
Authors: Ali K. Kadhim
This phase diagram reveals the presence of six intrinsic intermetallic compounds (IMCs).
Subsequently, we aim to synthesize ternary alloys by substituting either Fe or Al with one of the elements (B, Ga, Sn, Mn, and V).
This method facilitates the synthesis of intermetallic compounds and solid solutions, even in thermodynamically immiscible systems.
Miedema devised a systematic approach for determining the formation enthalpy of metal alloy compounds, drawing inspiration from the Pauling scheme used for calculating the formation enthalpy (∆H) of molecular compounds.
Kulik, Phase transformations during mechanical alloying of Fe–50% Al and subsequent heating of the milling product, Journal of Alloys and Compounds. 424 (2006) 119-127
Subsequently, we aim to synthesize ternary alloys by substituting either Fe or Al with one of the elements (B, Ga, Sn, Mn, and V).
This method facilitates the synthesis of intermetallic compounds and solid solutions, even in thermodynamically immiscible systems.
Miedema devised a systematic approach for determining the formation enthalpy of metal alloy compounds, drawing inspiration from the Pauling scheme used for calculating the formation enthalpy (∆H) of molecular compounds.
Kulik, Phase transformations during mechanical alloying of Fe–50% Al and subsequent heating of the milling product, Journal of Alloys and Compounds. 424 (2006) 119-127
Online since: December 2013
Authors: Mohd Noor Ervina Efzan, S. Amares, T.C. Yap
Conclusion
The aim of this study is to study the characteristics of the Sn-Bi solder alloy.
Journal of Alloys and Compounds 484 (2009) Pp.777–781
Journal of Alloys and Compounds 505 (2010) Pp. 793–800
Journals of Alloys and Compounds 485 (2009) Pp.225-230
Journal of Alloys and Compounds 457 (2008) Pp.323–328 [24] Zequn Mei, Helen A.
Journal of Alloys and Compounds 484 (2009) Pp.777–781
Journal of Alloys and Compounds 505 (2010) Pp. 793–800
Journals of Alloys and Compounds 485 (2009) Pp.225-230
Journal of Alloys and Compounds 457 (2008) Pp.323–328 [24] Zequn Mei, Helen A.
Online since: September 2017
Authors: Lorenzo Montesano, Annalisa Pola, Marcello Gelfi, Giovina Marina La Vecchia, Marialaura Tocci
Therefore, the aim of the present study is to identify any influence of Cr and Mn addition in the base AlSi3Mg alloy on corrosion resistance by potenziodynamic tests carried out in saline environment.
Moreover, the dissolution of β-Mg2Si compounds in the eutectic phase increases the Mg content in the Al matrix, thus reducing the corrosion potential of the samples [1].
It can also be observed in Fig. 3 that intermetallic compounds are not preferential corrosion site, since both intermetallics and their interface with the matrix appear not affected by the corrosion process.
Traverso: Journal of Alloys and Compounds Vol. 695 (2017), p. 2180
[11] Mondolfo: Aluminum Alloys.
Moreover, the dissolution of β-Mg2Si compounds in the eutectic phase increases the Mg content in the Al matrix, thus reducing the corrosion potential of the samples [1].
It can also be observed in Fig. 3 that intermetallic compounds are not preferential corrosion site, since both intermetallics and their interface with the matrix appear not affected by the corrosion process.
Traverso: Journal of Alloys and Compounds Vol. 695 (2017), p. 2180
[11] Mondolfo: Aluminum Alloys.
Online since: August 2012
Authors: Guerold Sergueevitch Bobrovinitchii, Ana Lúcia Diegues Skury, Shirlene Chagas, Sérgio Neves Monteiro
Introduction
Abrasive machining tools are ever more using cubic boron nitride (cBN) based composites inserts, especially for cutting a ferrous alloys, which not compatible with diamond tolls [1].
These cBN composites are usually sintered jointly with other compounds.
High percentage of cBN in the mixture was used to enable the sintered body to have high wear resistance under aggressive conditions in cutting of ferrous alloys.
For these compounds the wear was observed 2.5 times smaller than those sintered using a single cycle.
Journal Of University Of Science And Technology Beijing. 31,(2009), p.215-219.
These cBN composites are usually sintered jointly with other compounds.
High percentage of cBN in the mixture was used to enable the sintered body to have high wear resistance under aggressive conditions in cutting of ferrous alloys.
For these compounds the wear was observed 2.5 times smaller than those sintered using a single cycle.
Journal Of University Of Science And Technology Beijing. 31,(2009), p.215-219.
Online since: April 2023
Authors: Kahtan A. Mohammed, Shivprakash Barve, Pralhad Pesode, Shailendra Dayane, Yogesh Mane, Snehal Kolekar
[36] Cui Lan-Yue, Rong-Chang Zeng, Shao-Kang Guan, Wei-Chen Qi, Fen Zhang, Shuo-Qi Li, and En-Hou Han, Degradation mechanism of micro-arc oxidation coatings on biodegradable Mg-Ca alloys: The influence of porosity, Journal of Alloys and Compounds 695 (2017): 2464-2476
Kasiri-Asgarani, Structural, tribological and electrochemical behavior of SiC nanocomposite oxide coatings fabricated by plasma electrolytic oxidation (PEO) on AZ31 magnesium alloy, Journal of Alloys and Compounds 683 (2016): 241-255
[50] Li, Zhijun Yi Yuan, and Xiaoyan Jing, Effect of current density on the structure, composition and corrosion resistance of plasma electrolytic oxidation coatings on Mg–Li alloy, Journal of Alloys and Compounds 541 (2012): 380-391
Nie, The influence of pulse timing and current mode on the microstructure and corrosion behaviour of a plasma electrolytic oxidation (PEO) coated AM60B magnesium alloy, Journal of Alloys and Compounds 541 (2012): 41-48
[79] Gu Yanhong, Sukumar Bandopadhyay, Cheng-fu Chen, Yuanjun Guo, and Chengyun Ning, Effect of oxidation time on the corrosion behavior of micro-arc oxidation produced AZ31 magnesium alloys in simulated body fluid, Journal of Alloys and Compounds 543 (2012): 109-117
Kasiri-Asgarani, Structural, tribological and electrochemical behavior of SiC nanocomposite oxide coatings fabricated by plasma electrolytic oxidation (PEO) on AZ31 magnesium alloy, Journal of Alloys and Compounds 683 (2016): 241-255
[50] Li, Zhijun Yi Yuan, and Xiaoyan Jing, Effect of current density on the structure, composition and corrosion resistance of plasma electrolytic oxidation coatings on Mg–Li alloy, Journal of Alloys and Compounds 541 (2012): 380-391
Nie, The influence of pulse timing and current mode on the microstructure and corrosion behaviour of a plasma electrolytic oxidation (PEO) coated AM60B magnesium alloy, Journal of Alloys and Compounds 541 (2012): 41-48
[79] Gu Yanhong, Sukumar Bandopadhyay, Cheng-fu Chen, Yuanjun Guo, and Chengyun Ning, Effect of oxidation time on the corrosion behavior of micro-arc oxidation produced AZ31 magnesium alloys in simulated body fluid, Journal of Alloys and Compounds 543 (2012): 109-117