A Quick Screening of High Yield Strength Points in Single-Phase Co-Cr-Fe-Ni-Mo High Entropy Alloy System Based on Electronegativity, Thermodynamic Calculations and Machine Learning

2020 ◽  
Author(s):  
Zijing Song ◽  
Wei Fang ◽  
Jiaohui Yan ◽  
Ruobin Chang ◽  
Shaowu Huang ◽  
...  
Keyword(s):  
Machine Learning ◽  
Yield Strength ◽  
Single Phase ◽  
Alloy System ◽  
Thermodynamic Calculations ◽  
High Yield ◽  
High Entropy Alloy ◽  
High Yield Strength ◽  
High Entropy

A novel Fe-Co-Ni-Si high entropy alloy with high yield strength, saturated magnetization and Curie temperature

2020 ◽  
Vol 281 ◽  
pp. 128653
Author(s):  
Chen Chen ◽  
Yanzhou Fan ◽  
Hang Zhang ◽  
Jialiang Hou ◽  
Weiwei Zhang ◽  
...  
Keyword(s):  
Yield Strength ◽  
Curie Temperature ◽  
High Yield ◽  
High Entropy Alloy ◽  
High Yield Strength ◽  
High Entropy

Spinodal-modulated solid solution delivers a strong and ductile refractory high-entropy alloy

2021 ◽  
Author(s):  
Zibing An ◽  
Shengcheng Mao ◽  
Tao Yang ◽  
Chain Tsuan Liu ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Yield Strength ◽  
Lattice Strain ◽  
Tensile Elongation ◽  
High Yield ◽  
High Entropy Alloy ◽  
High Yield Strength ◽  
High Entropy ◽  
Elongation To Failure

A combination of high yield strength (1.1 GPa) and large tensile elongation to failure (28%) is achieved in a HfNbTiV refractory high-entropy alloy by creating modulated nanoscale inhomogeneity in both composition and lattice strain.

scholarly journals Deformation Twinning in a Metal-Intermetallic System: Novel Paradigm for Designing Alloys with Exceptional Strength-Ductility Combination

2020 ◽  
Author(s):  
Bharat Gwalani ◽  
Sriswaroop Dasari ◽  
Vishal Soni ◽  
Abhinav Jagetia ◽  
Priyanshi Agrawal ◽  
...  
Keyword(s):  
Yield Strength ◽  
Tensile Ductility ◽  
Tensile Elongation ◽  
Intermetallic Phase ◽  
Deformation Twinning ◽  
High Yield ◽  
New Paradigm ◽  
High Yield Strength ◽  
High Entropy ◽  
Intermetallic System

Engineering applications of high strength alloys are often restricted due to their poor tensile elongation or ductility. Alloys with high yield strength typically exhibit limited strain-hardenability (the difference between tensile and yield-strengths), leading to reduced tensile ductility. Deformation twinning, resulting in high strain hardenability, can lead to enhanced tensile elongation in single-phase solid solutions, including high entropy alloys (HEAs). However, alloy systems involving a solid solution matrix strengthened with an intermetallic phase do not exhibit deformation twinning, thus limiting their tensile ductility. We have successfully exploited deformation twinning in a novel HEA, strengthened using nano-lamellar ordered multi-component intermetallic precipitates, leading to an exceptionally high yield strength (~1630 MPa), good tensile ductility (~15%), and ultimate tensile strength (~1720 MPa), higher than any other reported fcc based alloy. Exploiting deformation twinning in a two-phase metal-intermetallic system, offers a new paradigm for addressing the strength-ductility trade-off plaguing alloy design.

Preparation and Mechanical Property of Mg-Zn-Y Alloy with a Long Period Ordered Phase

2010 ◽  
Vol 654-656 ◽  
pp. 619-622
Author(s):  
Takaomi Itoi ◽  
Yasuki Kuroda ◽  
Yoshihito Kawamura ◽  
Mitsuji Hirohashi
Keyword(s):  
Yield Strength ◽  
Composition Dependence ◽  
Alloy System ◽  
High Yield ◽  
Ternary Alloy System ◽  
High Yield Strength ◽  
Rich Region ◽  
Long Period ◽  
Large Elongation ◽  
Cast Alloys

The composition dependence of yield strength and elongation of the Mg-Zn-Y ternary alloy system were investigated. Yield strength was found to increase with the increasing Zn and Y contents, while elongation decreased in Zn- and Y- rich- regions in the system. The composition ratio of Zn to Y, both of which shows large elongation and comparatively high yield strength, was 1:1 in the Mg-rich region of the alloy system. Mg98Zn1Y1, Mg96Zn2Y2, and Mg94Zn3Y3 (at.%) cast alloys exhibited yield strength of 107, 129, and 173 MPa, and elongations of 17, 8, and 12 %, respectively. These alloys consist of Mg-, LPO-, and Mg3Zn3Y2- phases. We also prepared Mg-Zn-Y alloy sheets by hot rolling using cast alloys, and we investigated their microstructure and mechanical properties. The Mg98Zn1Y1, Mg96Zn2Y2, and Mg94Zn3Y3, alloy sheets exhibited yield strength of 276, 319, and 379 MPa, and elongations of 12, 11, and 8 %, respectively. After annealing at 673 K for 3 h, large elongations above 20 % were achieved both of the Mg98Zn1Y1 and Mg96Zn2Y2 alloy sheets.

scholarly journals Tensile mechanical performance of Ni–Co alloy nanowires by molecular dynamics simulation

RSC Advances ◽  
2019 ◽  
Vol 9 (44) ◽  
pp. 25817-25828 ◽  
Author(s):  
Xuefeng Lu ◽  
Panfeng Yang ◽  
Jianhua Luo ◽  
Junqiang Ren ◽  
Hongtao Xue ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Yield Strength ◽  
Mechanical Performance ◽  
Alloy System ◽  
Dynamics Simulation ◽  
High Yield ◽  
High Yield Strength ◽  
Yield Behavior ◽  
Alloy Nanowires

The addition of a little Co can promote the formation of Frank and other fixed dislocations, making the alloy system have high yield strength. The defects in nanowires accelerated the occurrence of yield behavior.

DURIMPHY

Alloy Digest ◽  
2007 ◽  
Vol 56 (2) ◽  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Yield Strength ◽  
Physical Properties ◽  
Precipitation Hardening ◽  
Heat Treating ◽  
High Yield ◽  
High Yield Strength ◽  
Precision Alloys ◽  
Very High

Abstract Durimphy is a maraging steel with 1724 MPa (250 ksi) tensile strength and a very high yield strength due to precipitation hardening. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: FE-140. Producer or source: Metalimphy Precision Alloys.

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