Formation of α-alumina scales in the Fe–Al(Cr) diffusion coating on China low activation martensitic steel

A chromium diffusion coating was applied on an oxide dispersion strengthened ferritic-martensitic (ODS-FM) steel to improve oxidation resistance at high temperature. By carrying out physical vapor deposition followed by inter-diffusion heat treatment, a thin Cr-rich carbide layer was produced on the ODS-FM steel. Both the as-received and surface-modified specimens were oxidation-tested at 650 °C in air and steam environments for 500 h. The surface-modified specimens showed improved oxidation resistance in both environments. In an air environment, both conditions exhibited a thin and continuous chromia layer, but the formation of Cr2O3 and (Mn, Cr)3O4 nodules resulted in greater weight gain for the as-received specimen. In a steam environment, weight gain increased for both the as-received and surface-modified specimen. Especially, the as-received specimen showed much greater weight gain with the formation of a thick oxide layer consisted of outer Fe-rich oxide and inner (Fe, Cr, Mn) oxide layers. On the other hand, a thin and continuous chromia layer was formed for the surface-modified specimen, which resulted in much less weight gain in a steam environment.

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ELECTRICAL PROPERTIES OF ALUMINA SCALES DEVELOPED ON β NiAl AT 1100°C

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19901158 ◽

1990 ◽

Vol 51 (C1) ◽

pp. C1-1015-C1-1020

Author(s):

D. NICOLAS-CHAUBET ◽

A. M. HUNTZ ◽

F. MILLOT

Keyword(s):

Electrical Properties ◽

Alumina Scales

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INFLUENCE OF MORPHOLOGY AND PHASE CONSTITUTION ON CREEP PROPERTIES OF LOW-CARBON MARTENSITIC STEEL

Nanomechanics Science and Technology An International Journal ◽

10.1615/nanomechanicsscitechnolintj.v6.i3.50 ◽

2015 ◽

Vol 6 (3) ◽

pp. 223-231

Author(s):

N. V. Kolebina ◽

V. L. Danilov

Keyword(s):

Martensitic Steel ◽

Low Carbon ◽

Phase Constitution ◽

Creep Properties ◽

Carbon Martensitic Steel

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Effects of Test Frequency on Fatigue Behaviour in a Tempered Martensitic Steel with Hydrogen Charge

Journal of the Society of Materials Science Japan ◽

10.2472/jsms.55.726 ◽

2006 ◽

Vol 55 (8) ◽

pp. 726-731 ◽

Cited By ~ 9

Author(s):

Hideyuki UYAMA ◽

Yoji MINE ◽

Yukitaka MURAKAMI

Keyword(s):

Martensitic Steel ◽

Hydrogen Charge ◽

Fatigue Behaviour ◽

Test Frequency

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ALMAR 20

Alloy Digest ◽

10.31399/asm.ad.sa0162 ◽

1964 ◽

Vol 13 (4) ◽

Keyword(s):

Corrosion Resistance ◽

Low Temperature ◽

Solid Fuel ◽

Precipitation Hardening ◽

Martensitic Steel ◽

Heat Treating ◽

Aircraft Landing ◽

Temperature Performance ◽

Aircraft Landing Gear ◽

High Nickel

Abstract ALMAR 20 is a high nickel martensitic steel which is strengthened by precipitation hardening. It has excellent combination of strength and toughness particularly in the presence of notches and cracks. It is recommended for applications such as solid fuel rocket cases and aircraft landing gear. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-162. Producer or source: Allegheny Ludlum Corporation.

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VALLOUREC VM 125 13Cr SS

Alloy Digest ◽

10.31399/asm.ad.ss1254 ◽

2016 ◽

Vol 65 (11) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

Physical Properties ◽

Tensile Properties ◽

Martensitic Steel ◽

Chloride Content ◽

Sour Service

Abstract Vallourec VM 125 13Cr SS is a 13Cr super martensitic steel for use in oil country tubular goods as a material suitable for sour service. The CY version offers corrosion and SCC resistance on a greater usage domain than API L80-13Cr in terms of temperature and chloride content. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming. Filing Code: SS-1254. Producer or source: Vallourec USA Corporation.

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