Investigation of the structure and properties of hypereutectic Ti-based bulk alloys

2004 ◽  
Vol 842 ◽  
Author(s):  
Dmitri V. Louzguine-Luzgin ◽  
Larissa V. Louzguina-Luzgina ◽  
Akihisa Inoue
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Intermetallic Compound ◽  
Deformation Behaviour ◽  
High Strength ◽  
Solid Solution Phase ◽  
Mn Additions ◽  
Bulk Alloys ◽  
Compound Tife ◽  
Intermetallic Compound Tife

ABSTRACTStructure and mechanical properties of binary Ti-TM (TM-other transition metals) and ternary Ti-Fe-(TM, B or Si) alloys produced in the shape of the arc-melted ingots of about 25 mm diameter and 10 mm height are studied. The formation of high-strength and ductile hypereutectic alloys was achieved in the Ti-Fe, Ti-Fe-Cu and Ti-Fe-B systems. The structures of the high-strength and ductile hypereutectic alloys studied by X-ray diffractometry and scanning electron microscopy were found to consist of the primary cubic Pm3 m intermetallic compound (TiFe-phase or a solid solution on its base) and a dispersed eutectic consisting of this Pm3m intermetallic compound + BCC Im 3 m β-Ti supersaturated solid solution phase. The hypereutectic Ti-Fe alloy showed excellent compressive mechanical properties. The addition of Cu improves its ductility. B addition increased mechanical strength. Ni, Cr and Mn additions caused embrittlement owing to the formation of alternative intermetallic compounds. The deformation behaviour and the fractography of the Ti-based alloys were studied in details. The reasons for the high strength and good ductility of the hypereutectic alloys are discussed.

Non-equilibrium Ti-Fe bulk alloys with ultra-high strength and enhanced ductility

2004 ◽  
Vol 851 ◽  
Author(s):  
Dmitri V. Louzguine-Luzgin ◽  
Larissa V. Louzguina-Luzgina ◽  
Hidemi Kato ◽  
Akihisa Inoue
Keyword(s):  
Solid Solution ◽  
Supersaturated Solid Solution ◽  
High Strength ◽  
Eutectic Structure ◽  
Solution Phase ◽  
Solid Solution Phase ◽  
Mechanical Fracture ◽  
Glassy Alloys ◽  
Fe Alloys ◽  
Bulk Alloys

ABSTRACTThe high-strength and ductile hypo-, hyper- and eutectic Ti-Fe alloys were formed in the shape of the arc-melted ingots with the dimensions of about 25–40 mm in diameter and 10–15 mm in height. The structure of the samples consists of cubic Pm 3 m TiFe and BCC Im 3 m β-Ti supersaturated solid solution phase. The arc-melted hypereutectic Ti65Fe35 alloy has a dispersed structure consisting of the primary TiFe phase and submicron-size eutectic structure. This alloy exhibits excellent mechanical properties: a Young's modulus of 149 GPa, a high mechanical fracture strength of 2.2 GPa, a 0.2 % yield strength of 1.8 GPa and 6.7 % ductility. The hard round-shaped intermetallic TiFe phase and the supersaturated β-Ti solid solution result in a high strength of the Ti65Fe35 alloy which in addition has much higher ductility compared to that of the nanostructured or glassy alloys. The reasons for the high ductility of the hypereutectic alloy are discussed.

CARLSON ALLOY C600 and C600 ESR

Alloy Digest ◽  
1994 ◽  
Vol 43 (11) ◽  
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Fracture Toughness ◽  
Cold Working ◽  
Elevated Temperatures ◽  
High Strength ◽  
Heat Treating ◽  
Solid Solution Alloy ◽  
Resistance To Oxidation ◽  
Good Workability

Abstract CARLSON ALLOYS C600 AND C600 ESR have excellent mechanical properties from sub-zero to elevated temperatures with excellent resistance to oxidation at high temperatures. It is a solid-solution alloy that can be hardened only by cold working. High strength at temperature is combined with good workability. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: Ni-470. Producer or source: G.O. Carlson Inc.

Development Of High-Strength Aluminum-Based Alloys By Synthesis Of New Multicomponent Quasicrystals

1998 ◽  
Vol 553 ◽  
Author(s):  
A. Inoue ◽  
H. M. Kimura
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Rapid Solidification ◽  
Future Development ◽  
High Strength ◽  
Supercooled Liquid ◽  
Engineering Properties ◽  
Atomic Configuration ◽  
Lanthanide Metal ◽  
Bulk Alloys

AbstractBy the control of composition, clustered atomic configuration and stability of the supercooled liquid in the rapid solidification and powder metallurgy processes, high-strength Al-based bulk alloys containing nanoscale nonperiodic phases were produced in AI-Ln-LTM, AI-ETM-LTM and Al-(V, Cr, Mn)-LTM (Ln=lanthanide metal, LTM=VII and VIII group metals, ETM=IV to VI group metals) alloys containing high Al contents of 92 to 95 at%. The nonperiodic phases are composed of amorphous or icosahedral (I) phase. In particular, the Al-based bulk alloys consisting of nanoscale I particles surrounded by Al phase exhibit much better mechanical properties as compared with commercial Al base alloys. The success of producing the Al-based alloys with good engineering properties by use of I phase is important for future development of I-based alloys as practical materials.

Mechanical alloying of nanocrystalline intermetallic compound TiFe doped with sulfur and magnesium

2014 ◽  
Vol 615 ◽  
pp. S569-S572 ◽  
Author(s):  
V. Yu. Zadorozhnyy ◽  
S.N. Klyamkin ◽  
M. Yu. Zadorozhnyy ◽  
M.V. Gorshenkov ◽  
S.D. Kaloshkin
Keyword(s):  
Intermetallic Compound ◽  
Mechanical Alloying ◽  
Compound Tife ◽  
Intermetallic Compound Tife

Vacuum Brazing of GH2132 Superalloy Using BNi-2+BNi-5 Composite Filler

2012 ◽  
Vol 602-604 ◽  
pp. 2087-2091
Author(s):  
Rui Feng Li ◽  
Zhi Shui Yu ◽  
Kai Qi
Keyword(s):  
Mechanical Properties ◽  
Intermetallic Compound ◽  
Intermetallic Compounds ◽  
Solution Phase ◽  
Solid Solution Phase ◽  
Vacuum Brazing ◽  
Vacuum Braze ◽  
Brazed Joint ◽  
Composite Filler ◽  
Boundary Penetration

In order to overcome the over formed intermetallic compound and the grain boundary penetration phenomenon in superalloys brazed joint using BNi-2 filler, the three variable portion of BNi2+BNi-5 composite filler is used to vacuum braze GH2132 superalloy. The results showed that the addition of BNi5 filler can decrease the formation of intermetallic compounds. For composite brazing filler of BNi2+40%BNi5, the brazing seam mainly composes of solid solution phase. The amounts of intermetallic compounds increased with the increase of brazing temperature and brazing clearance. The microhardness of the intermetallic compound is about 380~400 HV which is detrimental to the mechanical properties of the brazing joint.

scholarly journals THE EFFECT OF DIFFERENT FORMS OF OXYGEN ON PROPERTIES OF BETA TITANIUM ALLOYS

2018 ◽  
Vol 58 (3) ◽  
pp. 179 ◽  
Author(s):  
Jaroslav Málek ◽  
František Hnilica ◽  
Sonia Bartáková ◽  
Patrik Míka ◽  
Jaroslav Veselý
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Titanium Alloys ◽  
Titanium Powder ◽  
Aerospace Industry ◽  
Weight Ratio ◽  
High Strength ◽  
Beta Titanium ◽  
Oxide Particles ◽  
Beta Titanium Alloys

The beta-titanium alloys are widely used in many applications (medicine, aerospace industry etc.) due to their superior properties, such as corrosion resistance, biocompatibility and high strength to weight ratio. One of the ways how to increase the strength of those alloys is the addition of oxygen. The oxygen can be present in various forms in the alloy – in a solid solution or in the form of oxides. In this work, the effect of two forms of oxygen (i.e., solid solution and dispersion particles) was studied. Two alloys, one arc melted with different oxygen additions and one prepared via powder metallurgy where the titanium powder was oxidized, were prepared. The microstructure and mechanical properties were studied. A significant increase in strength with increasing the oxygen content in the solid solution has been observed. However, the powder oxidation has almost no effect on a tensile strength probably due to quite large interparticle distances between titanium oxide particles.

Sign in / Sign up

Export Citation Format

Share Document