Composition design, microstructure, and mechanical properties of novel Ti–Co–Ni–Zr complex concentrated alloys

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Junxia Wu ◽  
Peiyou Li ◽  
Hongfeng Dong ◽  
Yuefei Jia ◽  
Yaling Liu ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
High Strength ◽  
High Yield ◽  
Body Centered Cubic ◽  
High Yield Strength ◽  
Static Compression ◽  
Composition Design ◽  
Binary Eutectic ◽  
Mixing Method ◽  
Quasi Static Compression

Abstract The composition design of complex concentrated alloys originates from the composition design of amorphous alloys. To expand the composition design of alloys, herein, the compositions of novel Ti–Co–Ni–Zr complex concentrated alloys were obtained by the proportional mixing of Ti2Co intermetallics and Ni64Zr36 binary eutectic. The theory and method of this new alloy design are also discussed. The as-cast Ti28Co14Ni37.12Zr20.88, Ti30Co15Ni35.2Zr19.8, and Ti32 . Co16Ni33.3Zr18.7 alloys were composed of body-centered cubic TiNi and Ti2Ni phases. The Ti28Co14Ni37.12Zr20.88 alloy exhibited high yield strength (2 164 MPa) and compressive strength (2 539 MPa) under quasi-static compression at roomtemperature. The high strength of Ti28Co14Ni37.12Zr20.88 alloy is related to the precipitation of Ti2Ni along the grain boundary and the precipitation in the crystal. This paper validates that using the proportional mixing method of intermetallics and eutectic alloy is an effective method to design complex concentrated alloys with high strength.

REPUBLIC 50

Alloy Digest ◽  
1967 ◽  
Vol 16 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Yield Strength ◽  
Physical Properties ◽  
Structural Steel ◽  
High Strength ◽  
Heat Treating ◽  
High Yield ◽  
Bend Strength ◽  
High Yield Strength

Abstract Republic 50 is a high-strength low-alloy structural steel recommended where high yield strength and toughness combined with good weldability and corrosion resistance are required. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive, shear, and bend strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-205. Producer or source: Republic Steel Corporation.

CARPENTER CUSTOM 455

Alloy Digest ◽  
1967 ◽  
Vol 16 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Precipitation Hardening ◽  
Martensitic Stainless Steel ◽  
Aging Treatment ◽  
High Strength ◽  
Heat Treating ◽  
High Yield ◽  
Low Carbon ◽  
High Yield Strength

Abstract Carpenter Custom 455 is a low-carbon martensitic stainless steel that responds to precipitation-hardening. The single aging treatment produces exceptionally high yield strength with good ductility and toughness. It is suitable for applications requiring high strength and corrosion resistance at temperatures up to 800 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-193. Producer or source: Carpenter.

Rosenhain Centenary Conference - 3. Materials development present and future 3.3 Development of line pipe steels

1976 ◽  
Vol 282 (1307) ◽  
pp. 305-318 ◽  
Keyword(s):  
Large Diameter ◽  
High Strength ◽  
High Yield ◽  
Low Alloy Steels ◽  
Low Carbon ◽  
High Yield Strength ◽  
Line Pipe ◽  
Materials Development ◽  
Alloy Steels ◽  
Low Carbon Bainite

The demand for large diameter gas line pipe with high yield strength and high notch toughness has led to increased research in high strength low alloy steels. Physical metallurgists have developed both a fundamental and an empirical understanding of the properties and microstructures of ferrite pearlite steels. As specifications become more rigorous, alternative microstructures (low carbon bainite or tempered bainite and martensite) are being used in line pipe. There is a definite need for metallurgists to develop a clearer understanding of the interrelationships between their properties, microstructures, and processing before these alternatives are completely accepted for use in line pipe.

Innovative Geometric Redesign of Safety Footwear Components Using a Reverse Engineering Approach

2013 ◽  
Author(s):  
Sérgio L. Costa ◽  
Joel V. Silva ◽  
Nuno Peixinho ◽  
João P. Mendonça
Keyword(s):  
Reverse Engineering ◽  
High Strength Steels ◽  
High Strength ◽  
Test Results ◽  
Element Analysis ◽  
Static Compression ◽  
Advanced High Strength Steels ◽  
Engineering Approach ◽  
Different Thickness ◽  
Quasi Static Compression

The normative behavior of innovative toe cap models for safety footwear with different thickness ranges and materials, including Advanced High Strength Steels (AHSS), was investigated by means of the quasi-static compression test. The main purpose of this work was to confirm the solution potential of a new geometric redesign model, from a reverse engineering approach, that maximizes the potential of energy absorption. The investigation was performed with two dissimilar and evolutionary geometric models, and several properties correlations such as: stiffness, thickness range and material properties. From a Finite Element Analysis and experimental test results of toe cap prototypes, it was found that the geometric factor had significant influence on the balance of the structural stiffness with thickness reduction. The study of the elastic deformation and the springback effect of different models, allows pointing an improved weight saving of a new toe cap component.

The Effective Utilization of Yield Strength

1971 ◽  
Vol 93 (4) ◽  
pp. 962-968
Author(s):  
J. H. Gross
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Yield Strength ◽  
Stress Corrosion ◽  
High Strength Steels ◽  
High Strength ◽  
High Yield ◽  
High Yield Strength ◽  
Stress Dependent ◽  
Design Stress

In many structural and constructional applications (such as pressure vessels), steels, particularly high-yield-strength steels, are not being utilized as effectively as may be possible. This occurs because the design stress permitted by many specifications and codes is effectively based only on the tensile strength. Thus, the increase in yield-to-tensile-strength ratio with increasing tensile strength is not recognized, and no design-stress credit is given for the proportionately higher yield strength of high-strength steels. Because increased utilization of yield strength will probably require demonstration of the satisfactory fabricability and service performance of high-yield-strength steels, the present paper summarizes the general effects of increased yield strength on formability and weldability and on resistance to failure by stress-dependent modes—overload, brittle fracture, fatigue, and stress corrosion. The present state of knowledge indicates that fabrication does not significantly limit the use of high-strength steels. Although high-yield-strength steels are more difficult to form and weld than lower-strength steels, appropriate forming and welding practices that are not unduly restrictive are in common use for such steels. If design stress is based directly on yield strength, the safety factor against failure by simple overload or by unstable propagation of a crack decreases with increasing yield strength. However, increasing fracture toughness can significantly reduce susceptibility to failure by unstable crack propagation that is the result of low shear energy absorption or the growth of cracks to critical size by fatigue or stress corrosion. In recent years, the fracture toughness of steel has been continuously rising because control of metallurgical factors is continuously improving. For this and other reasons that suggest beneficial effects of yield strength, the possibility of more effectively utilizing the yield strength of steel should be reexamined.

DEVELOPMENT OF HIGH STRENGTH Mg-Cu-Zn ULTRAFINE EUTECTIC COMPOSITES WITH ENHANCED PLASTICITY

2009 ◽  
Vol 23 (06n07) ◽  
pp. 947-952 ◽  
Author(s):  
KIAN SONG ◽  
KI BUEM KIM ◽  
JIN MAN PARK ◽  
JAE SEOL LEE ◽  
JOON SIK PARK ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Plastic Strain ◽  
Yield Strength ◽  
Room Temperature ◽  
High Strength ◽  
Eutectic Structure ◽  
High Yield ◽  
Length Scale ◽  
High Yield Strength ◽  
Micrometer Size

Mg - Cu - Zn ultrafine eutectic composites with different length scale heterogeneity, consisting of micrometer size dendrites and/or ultrafine scale bimodal eutectics, exhibit high yield strength as well as good plasticity at room temperature compression. Among these alloys, micron-scale α- Mg dendrites reinforced ultrafine eutectic composites exhibit high yield strength of 310 ~ 420 MPa and large plasticity of 7 ~ 12%. Meanwhile, a Mg 72Cu5Zn23 alloy comprising a bimodal eutectic structure without the micron-scale α- Mg dendrites shows the optimized mechanical properties the highest yield strength of 455 MPa combined with a considerable plastic strain of ~5%.

Development of Seamless Pipes with Improved Strength-Toughness Combination for Hydraulic Cylinders

2007 ◽  
Vol 539-543 ◽  
pp. 4345-4350
Author(s):  
Claudio Guarnaschelli ◽  
P. Folgarait ◽  
E. Paravicini Bagliani ◽  
R. Demarchi ◽  
H. Desimone
Keyword(s):  
Laboratory Tests ◽  
High Strength ◽  
Cold Drawing ◽  
High Yield ◽  
High Yield Strength ◽  
Steel Pipes ◽  
Experimental Activity ◽  
Stress Relieving ◽  
Hydraulic Cylinders ◽  
Multi Phase

Steel pipes for hydraulic cylinders have to offer high strength levels and good toughness. A minimum value of 27 J at – 20 °C is typically requested. In this work, a comprehensive experimental activity based on both laboratory tests and industrial trials was performed in order to investigate the benefits related to the development of multi-phase microstructures in seamless pipes for hydraulic cylinders. The effect of these microstructures on strength and toughness were analyzed. Charpy V-notch (CVN) impact tests showed that toughness increases monotonically with the increase of the intercritical temperature, i.e. when the carbon content of the newly formed austenite is reduced. Industrial trials were performed on tubes applying a proper inter-critical quenching. The product after cold drawing and stress relieving achieved high yield strength values and showed an excellent toughness, even at – 40°C, in both the transverse and longitudinal directions.

VASCOMAX 350 CVM

Alloy Digest ◽  
1970 ◽  
Vol 19 (5) ◽  
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
High Strength ◽  
Heat Treating ◽  
Notch Toughness ◽  
High Yield ◽  
High Yield Strength ◽  
Temperature Performance ◽  
Ultra High Strength Steel ◽  
Yield Strength Level

Abstract VascoMax 350 CVM is an ultra-high-strength steel responding to a maraging heat treatment. It has superior notch toughness and ductility at the high yield strength level of 340,000 psi and above. It is recommended for aerospace and rocket equipment and structures. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-251. Producer or source: Teledyne Vasco.

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