Co and Ti effect on hot workability of phosphor bronze

TELNIC BRONZE

Alloy Digest ◽

10.31399/asm.ad.cu0004 ◽

1953 ◽

Vol 2 (1) ◽

Keyword(s):

Heat Treatment ◽

Corrosion Resistance ◽

Physical Properties ◽

Base Alloy ◽

Cold Work ◽

High Strength ◽

Heat Treating ◽

Hot Workability ◽

Copper Base ◽

Copper Base Alloy

Abstract Chase TELNIC BRONZE is a high strength copper-base alloy, hardenable both by heat treatment and cold work, and also having good conductivity, corrosion resistance, cold and hot workability, and excellent machinability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: Cu-4. Producer or source: Chase Brass & Copper Company Inc..

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ATI 425

Alloy Digest ◽

10.31399/asm.ad.ti0133 ◽

2004 ◽

Vol 53 (7) ◽

Keyword(s):

Fracture Toughness ◽

Chemical Process ◽

Aerospace Industry ◽

Processing Parameters ◽

Process Industry ◽

Hot Workability ◽

Chemical Process Industry ◽

Armor Plate ◽

Ballistic Protection ◽

Hot Rolled

Abstract ATI 425 was originally developed for hot-rolled armor plate to provide ballistic protection comparable to Ti-6Al-4V and has been evaluated against a variety of projectile threats for use as armor. While processing the alloy for armor plate applications, it was observed that the material exhibited very good hot workability, permitting a more lenient window of processing parameters than necessary for Ti-6Al-4V. Versatility then expanded, and applications now exist in the chemical process industry (CPI) and in the aerospace industry. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance. Filing Code: TI-133. Producer or source: ATI Wah Chang, Allegheny Technologies. Originally published March 2004, revised July 2004.

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NIPPON/SUMITOMO SUPER625

Alloy Digest ◽

10.31399/asm.ad.ni0740 ◽

2017 ◽

Vol 66 (12) ◽

Keyword(s):

Thermal Stability ◽

Fracture Toughness ◽

Corrosion Resistance ◽

High Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Nickel Alloy ◽

Hot Workability ◽

Temperature Performance ◽

Compositional Elements

Abstract Nippon Sumitomo Super625 is a nickel alloy with an optimization of compositional elements for thermal stability and hot workability. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming. Filing Code: Ni-740. Producer or source: Sumitomo Metal USA Corporation.

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Hot Workability of 300M Steel Investigated by In Situ and Ex Situ Compression Tests

Metals ◽

10.3390/met9080880 ◽

2019 ◽

Vol 9 (8) ◽

pp. 880 ◽

Cited By ~ 2

Author(s):

Rongchuang Chen ◽

Haifeng Xiao ◽

Min Wang ◽

Jianjun Li

Keyword(s):

Flow Stress ◽

Strain Rate ◽

Hot Working ◽

Ex Situ ◽

Lower Strain Rate ◽

Hot Workability ◽

Compression Tests ◽

300M Steel ◽

Lower Strain

In this work, hot compression experiments of 300M steel were performed at 900–1150 °C and 0.01–10 s−1. The relation of flow stress and microstructure evolution was analyzed. The intriguing finding was that at a lower strain rate (0.01 s−1), the flow stress curves were single-peaked, while at a higher strain rate (10 s−1), no peak occurred. Metallographic observation results revealed the phenomenon was because dynamic recrystallization was more complete at a lower strain rate. In situ compression tests were carried out to compare with the results by ex situ compression tests. Hot working maps representing the influences of strains, strain rates, and temperatures were established. It was found that the power dissipation coefficient was not only related to the recrystallized grain size but was also related to the volume fraction of recrystallized grains. The optimal hot working parameters were suggested. This work provides comprehensive understanding of the hot workability of 300M steel in thermal compression.

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Hot Compression Behavior of New Al-6Mg and Al-8Mg Alloy with Improved Hot Workability Fabricated by Direct Chill Casting Method

Metals ◽

10.3390/met11020288 ◽

2021 ◽

Vol 11 (2) ◽

pp. 288

Author(s):

Nam-Seok Kim ◽

Kweon-Hoon Choi ◽

Seung-Yoon Yang ◽

Seong-Ho Ha ◽

Young-Ok Yoon ◽

...

Keyword(s):

Dynamic Recrystallization ◽

Compression Test ◽

Deformation Behavior ◽

Hot Compression ◽

High Temperature Deformation ◽

Temperature Deformation ◽

Strength Increase ◽

Peak Strain ◽

Hot Workability ◽

Hot Compression Test

A hot compression test of new Al-6Mg and Al-8Mg alloys was conducted to understand the dynamic recrystallization (DRX) behavior by Mg contents. To investigate the hot workability of Al-Mg with high Mg contents, the hot deformation behavior of Al-6Mg and Al-8Mg alloys was analyzed by a hot compression test in the temperature range of 300–450 °C, and the strain rate range of 10−3–100/s. Subsequently, high-temperature deformation behavior was investigated through the processing map and microstructure observation. In this study, the results have shown that, as the Mg contents increase, the maximum and yield strength increase while rapid flow softening after the peak strain has been observed due to accelerated dynamic recrystallization (DRX). Finally, the increase of Mg contents affects an increase of heat dissipation efficiency to be an indicator of regular deformation.

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Dynamic Softening Mechanisms and Microstructure Evolution of TB18 Titanium Alloy during Uniaxial Hot Deformation

Metals ◽

10.3390/met11050789 ◽

2021 ◽

Vol 11 (5) ◽

pp. 789

Author(s):

Qiang Fu ◽

Wuhua Yuan ◽

Wei Xiang

Keyword(s):

Titanium Alloy ◽

Dynamic Recovery ◽

True Strain ◽

Hot Workability ◽

Compression Tests ◽

Phase Zone ◽

Β Phase ◽

Stability And Instability ◽

Dynamic Softening ◽

Transus Temperature

In this study, isothermal compression tests of TB18 titanium alloy were conducted using a Gleeble 3800 thermomechanical simulator for temperatures ranging from 650 to 880 °C and strain rates ranging from 0.001 to 10 s−1, with a constant height reduction of 60%, to investigate the dynamic softening mechanisms and hot workability of TB18 alloy. The results showed that the flow stress significantly decreased with an increasing deformation temperature and decreasing strain rate, which was affected by the competition between work hardening and dynamic softening. The hyperbolic sine Arrhenius-type constitutive equation was established, and the deformation activation energy was calculated to be 303.91 kJ·mol−1 in the (α + β) phase zone and 212.813 kJ·mol−1 in the β phase zone. The processing map constructed at a true strain of 0.9 exhibited stability and instability regions under the tested deformation conditions. The microstructure characteristics demonstrated that in the stability region, the dominant restoration and flow-softening mechanisms were the dynamic recovery of β phase and dynamic globularization of α grains below transus temperature, as well as the dynamic recovery and continuous dynamic recrystallization of β grains above transus temperature. In the instability region, the dynamic softening mechanism was flow localization in the form of a shear band and a deformation band caused by adiabatic heating.

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