The Evolution of Plate and Extruded Products with High Strength and Fracture Toughness

Aluminum-lithium alloys have a low density and high strength to weight ratio. They are being developed for the aerospace industry.The high strength of Al-Li can be attributed to precipitation hardening. Unfortunately when aged, Al-Li aquires a low ductility and fracture toughness. The precipitate in Al-Li is part of a sequence SSSS → Al3Li → AlLi A description of the phases may be found in reference 1 . This paper is primarily concerned with the Al3Li phase. The addition of Zr to Al-Li is being explored to find the optimum in properties. Zirconium improves fracture toughness and inhibits recrystallization. This study is a comparision between two Al-Li-Zr alloys differing in Zr concentration.Al-2.99Li-0.17Zr(alloy A) and Al-2.99Li-0.67Zr (alloy B) were solutionized for one hour at 500oc followed by a water quench. The specimens were then aged at 150°C for 16 or 40 hours. The foils were punched into 3mm discs. The specimens were electropolished with a 1/3 nitric acid 2/3 methanol solution. The transmission electron microscopy was conducted on the JEM 200CX microscope.

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Phase separation in sol gel-derived ceramic films of silica-zirconia, alumina-zirconia, and titania-zirconia system

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100170967 ◽

1994 ◽

Vol 52 ◽

pp. 646-647

Author(s):

J. Tong ◽

L. Eyring

Keyword(s):

Fracture Toughness ◽

Phase Separation ◽

Sol Gel ◽

Great Influence ◽

High Strength ◽

Chemical Durability ◽

Separation Method ◽

Toughening Mechanism ◽

Ceramic Films ◽

Zirconia Toughened Alumina

There is increasing interest in composites containing zirconia because of their high strength, fracture toughness, and its great influence on the chemical durability in glass. For the zirconia-silica system, monolithic glasses, fibers and coatings have been obtained. There is currently a great interest in designing zirconia-toughened alumina including exploration of the processing methods and the toughening mechanism.The possibility of forming nanocrystal composites by a phase separation method has been investigated in three systems: zirconia-alumina, zirconia-silica and zirconia-titania using HREM. The morphological observations initially suggest that the formation of nanocrystal composites by a phase separation method is possible in the zirconia-alumina and zirconia-silica systems, but impossible in the zirconia-titania system. The separation-produced grain size in silica-zirconia system is around 5 nm and is more uniform than that in the alumina-zirconia system in which the sizes of the small polyhedron grains are around 10 nm. In the titania-zirconia system, there is no obvious separation as was observed in die alumina-zirconia and silica-zirconia system.

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Effect of thickness on the fracture toughness of high strength steel for gas well casings

Materials Testing ◽

10.3139/120.111252 ◽

2018 ◽

Vol 60 (11) ◽

pp. 1077-1083 ◽

Cited By ~ 1

Author(s):

Zhaoming Zhou ◽

Xishui Guo ◽

Tiejun Lin ◽

Desen Mao

Keyword(s):

Fracture Toughness ◽

High Strength Steel ◽

High Strength ◽

Gas Well

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CARLSON ALLOY C600 and C600 ESR

Alloy Digest ◽

10.31399/asm.ad.ni0470 ◽

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.

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INCONEL ALLOY 725

Alloy Digest ◽

10.31399/asm.ad.ni0445 ◽

1994 ◽

Vol 43 (1) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

Shear Strength ◽

Physical Properties ◽

Tensile Properties ◽

High Strength ◽

Heat Treating ◽

Inconel Alloy ◽

Alloy 625

Abstract INCONEL ALLOY 725 is an age-hardenable alloy that displays high strength along with excellent ductility and toughness. Its corrosion resistance is comparable to alloy 625. Good flattening properties are exhibited in age-hardened tubing. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fracture toughness. It also includes information on corrosion resistance as well as heat treating and machining. Filing Code: Ni-445. Producer or source: Inco Alloys International Inc.

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DURANICKEL ALLOY 301

Alloy Digest ◽

10.31399/asm.ad.ni0083 ◽

1963 ◽

Vol 12 (6) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

High Temperature ◽

Heat Resistance ◽

Physical Properties ◽

Surface Treatment ◽

High Strength ◽

Heat Treating ◽

International Nickel Company ◽

Temperature Performance

Abstract DURANICKEL Alloy 301 is a wrought, age-hardenable nickel alloy having high strength, high corrosion and heat resistance. It is recommended for springs, diaphrams, bearings, pump and valve parts. 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 high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-83. Producer or source: The International Nickel Company Inc..

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MEEHANITE GD

Alloy Digest ◽

10.31399/asm.ad.ci0032 ◽

1964 ◽

Vol 13 (1) ◽

Keyword(s):

Fracture Toughness ◽

Shear Strength ◽

Cast Iron ◽

Physical Properties ◽

Tensile Properties ◽

High Strength ◽

Heat Treating ◽

Damping Capacity ◽

Iron And Steel ◽

Lubricating Properties

Abstract MEEHANITE-GD is a high strength iron casting having high damping capacity, self-lubricating properties, and good machinability. It combines the good properties of both cast iron and steel. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on casting, heat treating, machining, and joining. Filing Code: CI-32. Producer or source: Meehanite Metal Corporation.

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UNS A03560

Alloy Digest ◽

10.31399/asm.ad.al0274 ◽

1986 ◽

Vol 35 (12) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

High Strength ◽

Heat Treating ◽

Casting Alloy ◽

Aluminum Casting ◽

Good Resistance ◽

Aluminum Casting Alloy ◽

Temperature Performance ◽

Heat Treated

Abstract UNS No. A03560 is a heat-treatable aluminum casting alloy. Normally it is used only when heat-treated (aged) strengths are required. It is recommended for high-strength, pressure-tight castings, intricate shapes and where good resistance to corrosion is needed. Its many applications include crank cases, gear cases, oil pans, airframe fittings and instrument housings. 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 and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-274. Producer or source: Various aluminum companies.

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DUCTALLOY

Alloy Digest ◽

10.31399/asm.ad.ci0014 ◽

1956 ◽

Vol 5 (6) ◽

Keyword(s):

Fracture Toughness ◽

High Temperature ◽

Physical Properties ◽

High Strength ◽

Heat Treating ◽

High Ductility ◽

High Carbon ◽

Brake Shoe ◽

Temperature Performance ◽

Ferrous Material

Abstract DUCTALLOY is a high-carbon ferrous material having high strength, high ductility, toughness and machinability. It is supplied in three grades: pearlitic grade 80, ferritic grade 60, and austenitic grade A50. 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 high temperature performance as well as heat treating, machining, and joining. Filing Code: CI-14. Producer or source: American Brake Shoe Company.

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