scholarly journals The Pilling-Bedworth Ratio of Oxides Formed From the Precipitated Phases in Magnesium Alloys

2021 ◽  
Vol 8 ◽  
Author(s):  
Quantong Jiang ◽  
Dongzhu Lu ◽  
Chang Liu ◽  
Nazhen Liu ◽  
Baorong Hou
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
High Temperatures ◽  
Outer Layer ◽  
Oxide Films ◽  
Good Protection ◽  
The Common ◽  
Precipitated Phases

The Pilling-Bedworth ratio of oxides preferentially formed from the precipitated phases in magnesium alloys were calculated. The results showed that the PBR value of Nd2O3 preferentially formed from Mg12Nd was 1.0584, and the PBR value of Y2O3 preferentially formed from Mg24Y5 was 1.1923. Both the Nd2O3 and Y2O3 would provide a good protection to the Mg matrix. The Gd2O3 preferentially formed from Mg3Gd, whereas the MgO preferentially formed from MgNi2. The PBR value of these two oxides were both larger than 2. The corresponding oxides formed from the common precipitated phases Mg17Al12, MgZn2, MgCu2, Mg2Ca, Mg12Ce, and MgAg were all less than 1. The oxide films formed on surfaces of pure Mg and Mg-xY (x = 3, 5, 7 wt.%) alloys at high temperatures were analyzed. The results showed that the oxide films were composed of a Y2O3/MgO outer layer and an inner layer rich with Y2O3. The formation of Y2O3 was mainly caused by the oxidation of Mg24Y5. The more Y2O3 existed in the composite oxidation film, the better corrosion resistance of the Mg-Y samples.

TRENDS IN THE DEVELOPMENT OF CAST MAGNESIUM ALLOYS WITH AN INCREASED IGNITION TEMPERATURE (review)

2021 ◽  
pp. 3-9
Author(s):  
A.A. Leonov ◽  
◽  
N.V. Trofimov ◽  
V.A. Duyunova ◽  
Z.P. Uridiya ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Magnesium Alloys ◽  
High Temperatures ◽  
Fire Resistance ◽  
Ignition Temperature ◽  
Mechanical Characteristics ◽  
Chemical Characteristics ◽  
Increased Temperature ◽  
Cast Magnesium Alloys ◽  
Cast Magnesium

Trends in the development of cast magnesium alloys with increased temperature, ignition and fire resistance are presented. The main world companies and institutions - developers of casting magnesium alloys are presented. The developed alloys are considered, indicating their chemical characteristics, mechanical characteristics at high and high temperatures and corrosion resistance, as well as the use of materials and design aspects of industry. The presented magnesium alloys with an increased ignition temperature allow expanding the scope of their use.

COPPER ALLOY No. 268

Alloy Digest ◽  
1976 ◽  
Vol 25 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Copper Alloy ◽  
Cold Working ◽  
Heat Treating ◽  
Zinc Alloy ◽  
Good Resistance ◽  
Wide Range ◽  
Copper Zinc ◽  
The Common ◽  
Cold Worked

Abstract Copper Alloy No. 268 is a copper-zinc alloy with excellent cold-working properties and good resistance to corrosion. It can be cold worked by all the common fabrication processes and has a wide range of applications. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-306. Producer or source: Brass mills.

INCOTHERM TD

Alloy Digest ◽  
2005 ◽  
Vol 54 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
High Temperatures ◽  
Rare Earths ◽  
Temperature Performance

Abstract Incotherm TD is a thermocouple-sheathing alloy with elements of silicon and rare earths to enhance oxidation resistance at high temperatures. This datasheet provides information on composition, physical properties, and tensile properties as well as deformation. It also includes information on high temperature performance and corrosion resistance as well as forming. Filing Code: Ni-628. Producer or source: Special Metals Corporation.

NIMAG 105

Alloy Digest ◽  
1976 ◽  
Vol 25 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Curie Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
High Temperatures ◽  
Heat Treating ◽  
High Curie Temperature ◽  
Magnetostriction Coefficient

Abstract NIMAG 105 is a wrought nickel alloy with a high magnetostriction coefficient. It is easily formed or drawn, has a high Curie temperature and has low oxidation at high temperatures. It is recommended for electronic and electrical applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-228. Producer or source: Spang Industries Inc..

AK STEEL 410S

Alloy Digest ◽  
2006 ◽  
Vol 55 (5) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Ferritic Stainless Steel ◽  
High Temperatures ◽  
Heat Treating ◽  
Austenite Formation ◽  
Oxidation Resistant

Abstract AK Steel 410S is a fully ferritic stainless steel with elements added to retard austenite formation at high temperatures. The resulting low hardening allows for use as oxidation-resistant parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-964. Producer or source: AK Steel.

MAERKER G4827

Alloy Digest ◽  
1995 ◽  
Vol 44 (7) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Temperatures ◽  
Iron Chromium

Abstract Grade G4827 is an iron-chromium-nickel-niobium (columbium) corrosion and heat resisting casting especially useful for applications involving long exposures to high temperatures or field welding. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on corrosion resistance as well as casting and joining. Filing Code: SS-601. Producer or source: Schmidt & Clemens Inc.

RA 309

Alloy Digest ◽  
1963 ◽  
Vol 12 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Temperatures ◽  
Heat Treating ◽  
Corrosion Resistant Steel ◽  
Resistant Steel ◽  
Corrosion Resistant ◽  
Temperature Performance

Abstract RA 309 is a chromium-nickel heat and corrosion resistant steel recommended for high temperatures applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-142. Producer or source: Rolled Alloys Inc..

LEAD

Alloy Digest ◽  
1971 ◽  
Vol 20 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Corrosion Resistant ◽  
Temperature Performance ◽  
The Common

Abstract LEAD is the heaviest, the most corrosion resistant and among the most malleable of the common metals. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, forming, and joining. Filing Code: Pb-7. Producer or source: Primary lead producers.

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