Microstructure and Hardness of High Temperature Alloy Ti-1100 Melted in CaO Crucible

2014 ◽  
Vol 788 ◽  
pp. 158-163
Author(s):  
Bin Guo Fu ◽  
Hong Wei Wang ◽  
Chun Ming Zou ◽  
Pan Ma ◽  
Zun Jie Wei
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Thin Layer ◽  
Vickers Hardness ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
High Temperature Alloy ◽  
Melting Technology ◽  
Cast Alloys

A high temperature alloy Ti-1100 was produced by vacuum induction melting technology. The effects of casting modulus on the microstructure and hardness of the cast alloys were determined and the results were presented and briefly discussed. Results demonstrate that the microstructure of cast alloys with different modulus are all widmanstatten structure with basket weave features where individual α-laths are separated by a thin layer of retained prior β phase. The greater the modulus, the larger the prior β grain size and α-laths spacing, and the less the Vickers hardness. The roles of the casting modulus governing the microstructures and hardness of the alloys were also discussed.

VASCOMAX T-300

Alloy Digest ◽  
1990 ◽  
Vol 39 (12) ◽  
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
High Temperature ◽  
Heat Treating ◽  
Vacuum Arc ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Vacuum Arc Remelting ◽  
Temperature Performance

Abstract VASCOMAX T-300 is an 18% nickel maraging steel in which titanium is the primary strengthening agent. It develops a tensile strength of about 300,000 psi with simple heat treatment. The alloy is produced by Vacuum Induction Melting/Vacuum Arc Remelting. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-454. Producer or source: Teledyne Vasco.

Influences of Solution Temperatures on Microstructure and Mechanical Properties of near α Titanium Alloy

2021 ◽  
Vol 1035 ◽  
pp. 89-95
Author(s):  
Chao Tan ◽  
Zi Yong Chen ◽  
Zhi Lei Xiang ◽  
Xiao Zhao Ma ◽  
Zi An Yang
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
High Temperature ◽  
Room Temperature ◽  
Solution Temperature ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Β Phase ◽  
Α Phase ◽  
New Type

A new type of Ti-Al-Sn-Zr-Mo-Si series high temperature titanium alloy was prepared by a water-cooled copper crucible vacuum induction melting method, and its phase transition point was determined by differential thermal analysis to be Tβ = 1017 °C. The influences of solution temperature on the microstructures and mechanical properties of the as-forged high temperature titanium alloy were studied. XRD results illustrated that the phase composition of the alloy after different heat treatments was mainly α phase and β phase. The microstructures showed that with the increase of the solution temperature, the content of the primary α phase gradually reduced, the β transformation structure increased by degrees, then, the number and size of secondary α phase increased obviously. The tensile results at room temperature (RT) illustrated that as the solution temperature increased, the strength of the alloy gradually increased, and the plasticity decreased slightly. The results of tensile test at 650 °C illustrated that the strength of the alloy enhanced with the increase of solution temperature, the plasticity decreased first and then increased, when the solution temperature increased to 1000 °C, the alloy had the best comprehensive mechanical properties, the tensile strength reached 714.01 MPa and the elongation was 8.48 %. Based on the room temperature and high temperature properties of the alloy, the best heat treatment process is finally determined as: 1000 °C/1 h/AC+650 °C/6 h/AC.

scholarly journals Mechanical and Electrical Characteristics of WB2 Synthesized at High Pressure and High Temperature

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1212 ◽  
Author(s):  
Changchun Wang ◽  
Lele Song ◽  
Yupeng Xie
Keyword(s):  
Grain Size ◽  
High Pressure ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Vickers Hardness ◽  
Single Phase ◽  
Hard Material ◽  
Experimental Conditions ◽  
Boundary Density ◽  
Grain Sizes

Single-phase tungsten diboride (WB2) was synthesized at high pressure and high temperature. The different grain sizes ranging from 300 nm to 3 µm were successfully obtained in WB2 by controlling the experimental conditions. The effects of grain size on hardness and resistivity properties were investigated. The Vickers hardness of WB2 was modulated with grain size. The maximum asymptotic Vickers hardness is 25.5 GPa for WB2 with a grain size of 300 nm which is a 10% increase compared to WB2 with a grain size of 3 µm. The optimal electrical resistivity of WB2 was 10−7 Ωm with the biggest grain size of 3 µm, which is ascribed to low grain boundary density. The superior properties of hardness and electrical resistivity demonstrate that WB2 should be a new functional hard material replacing WC which is widely used in industrial production.

scholarly journals Investigations on the Process of Lead Removal from Cu-Pb Alloys During their Melting in Vacuum Induction Furnace

2017 ◽  
Vol 62 (4) ◽  
pp. 2449-2453 ◽  
Author(s):  
G. Siwiec ◽  
P. Buliński ◽  
M. Palacz ◽  
J. Smołka ◽  
L. Blacha
Keyword(s):  
Thermodynamic Analysis ◽  
Induction Furnace ◽  
Vacuum Induction Melting ◽  
Vacuum Induction Furnace ◽  
Lead Removal ◽  
Induction Melting ◽  
Melting Technology

AbstractThe paper presents analysis and assessment of operating power of vacuum induction furnace in relation to the efficiency of lead removal from Cu-Pb alloy in VIM (vacuum induction melting) technology. Thermodynamic analysis of the process is performed as well.

NICKELVAC X-750

Alloy Digest ◽  
1990 ◽  
Vol 39 (10) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Rupture Strength ◽  
Heat Treating ◽  
Vacuum Arc ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Creep Rupture Strength ◽  
Temperature Performance ◽  
Oxidation And Corrosion

Abstract NICKEL VAC X-750 is a precipitation hardenable nickel-alloy with high creep-rupture strength up to 1500 F(816 C) and excellent oxidation and corrosion resistance up to 1800 F(982 C). It is produced by vacuum induction melting followed by either vacuum arc or electroslag remelting. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ni-386. Producer or source: Teledyne Allvac.

CARPENTER VIM-VAR M-50 BEARING STEEL

Alloy Digest ◽  
1991 ◽  
Vol 40 (7) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Heat Treating ◽  
Bearing Steel ◽  
Vacuum Arc ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Vacuum Arc Remelting ◽  
Temperature Performance ◽  
High Degree

Abstract CARPENTER VIM-VAR M-50 Bearing Steel is produced by vacuum induction melting and vacuum arc remelting. The alloy's high degree of cleanliness enables it to be finished to a high luster. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming and heat treating. Filing Code: TS-360. Producer or source: Carpenter. Originally published as Carpenter M-50, April 1980, revised July 1991.

Oxide Dispersion in Direct-Cast Gamma TiAl-Based Alloy

1994 ◽  
Vol 364 ◽  
Author(s):  
Toshihiro Hanamura ◽  
Keizo Hashimoto
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
High Frequency ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Oxide Dispersion ◽  
Dispersion Strengthening ◽  
Alumina Particles ◽  
High Temperature Tensile ◽  
High Frequency Induction

AbstractThe objective of this study is to evaluate the high temperature behavior of γ TiAl-based alloy sheets containing AI2O3 particles, produced by a combination of vacuum induction melting, use of a CaO crucible, and direct sheet casting, over a wide temperature range. Alumina particles, having a tendency to coagulate during solidification of a TiAl ingot, are finely dispersed due to the disturbance of high frequency induction, and frozen without having enough time to grow in size by direct sheet casting. The TiAl sheet thus produced shows remarkable high temperature tensile strength which exceeds that of conventional ingots having the same composition and various different structures. This is determined to be attributable to the dispersion strengthening of finely dispersed AI2O3 particles whose diameter is from 100 to 500nm. Moreover, because of the small size of these alumina particles, the TiAl sheet does not show any significant retardation in high temperature ductility, which is often the case in conventional ceramic-reinforced intermetallic compound composites.

Obtaining and Characterization of Biocompatible Co-Cr as Cast Alloys

2013 ◽  
Vol 583 ◽  
pp. 16-21 ◽  
Author(s):  
Victor Geanta ◽  
Ionelia Voiculescu ◽  
Radu Stefanoiu ◽  
Ioana Chirita
Keyword(s):  
Chemical Elements ◽  
Point Of View ◽  
Vacuum Induction Melting ◽  
Chemical Compositions ◽  
Induction Melting ◽  
Surgical Implants ◽  
Cast Alloys ◽  
Superior Mechanical Properties ◽  
Materials Used ◽  
Experimental Researches

Biocompatible metallic materials used for surgical implants in human body should have superior mechanical properties, as: microhardness, wear resistance, tensile strength, elongation, fracture toughness, creep resistance etc. These results can be also obtained by strict setting and controlling of chemical composition, by adding chemical elements that lead at the improvement of the mentioned properties. In this paper has been presented experimental researches regarding the obtaining process of some biocompatible Co-Cr cast alloys, having different chemical compositions, using the method of vacuum induction melting (VIM). After the obtainment process, samples were characterised from microstructure and microhardness point of view.

Sign in / Sign up

Export Citation Format

Share Document