Stress-Rupture Strength, Structure, and Properties of Welded Joints of 15Kh1M1F and X10CrMoVNb9-1 (P91) Steels

Abstract THERMO-SPAN ALLOY is a precipitation-hardenable superalloy with a low coefficient of expansion combined with tensile and stress-rupture strength. Thermal fatigue resistance is inherent. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on forming and heat treating. Filing Code: FE-105. Producer or source: Carpenter.

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Method of estimating the effect of atmosphere on the stress-rupture strength characteristics of heat-resistant metallic materials

Strength of Materials ◽

10.1007/bf01529749 ◽

1988 ◽

Vol 20 (3) ◽

pp. 338-342

Author(s):

I. S. Tsvilyuk

Keyword(s):

Rupture Strength ◽

Stress Rupture ◽

Strength Characteristics ◽

Metallic Materials ◽

Stress Rupture Strength ◽

Heat Resistant

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Structure and Properties of Welded Joints of 7CrMoVTiB10-10 (T24) Steel

Advances in Materials Science ◽

10.1515/adms-2017-0026 ◽

2018 ◽

Vol 18 (1) ◽

pp. 37-47 ◽

Cited By ~ 1

Author(s):

K. Pańcikiewicz

Keyword(s):

Welded Joints ◽

Filler Metal ◽

Coefficient Of Thermal Expansion ◽

Rupture Strength ◽

Quality Level ◽

Structure And Properties ◽

Creep Rupture Strength ◽

Standard Requirement ◽

Gas Tungsten Arc ◽

Filler Metals

AbstractGas Tungsten Arc butt welded joints of tubes of 7CrMoVTiB10-10 made using bainitic-martensitic P 24-IG filler metal were found to be susceptible to root cracking. This was avoided by using the CMS-IG filler metal and austenitic EPRI P87 filler metal. Detailed coefficient of thermal expansion analysis for both filler metals was performed. Unfortunately, CMS-IG filler metal is characterized by a lower creep rupture strength than P 24-IG. For this reason, the joints were produced by the 141 method with using two filler metals: P 24- IG and EPRI P87. All the welded joints was characterized by the B quality level. Macrostructural, microstructural and hardness data for both welded joints are presented. The standard requirement, < 350 HV10, was marginally not met and was achieved through post weld heat treatment.

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Tensile and Stress-Rupture Behavior of Hafnium Carbide Dispersed Molybdenum and Tungsten Base Alloy Wires

MRS Proceedings ◽

10.1557/proc-322-473 ◽

1993 ◽

Vol 322 ◽

Author(s):

H.M. Yun ◽

R.H. Titran

Keyword(s):

Strain Rate ◽

Strain Rate Sensitivity ◽

Rupture Strength ◽

Base Alloy ◽

Stress Rupture ◽

Rate Sensitivity ◽

Tungsten Alloy ◽

Rate Dependency ◽

Hafnium Carbide ◽

Stress Rupture Strength

AbstractThe tensile strain rate sensitivity and the stress-rupture strength of Mo-base and W-base alloy wires, 380 µm in diameter, were determined over the temperature range from 1200 to 1600 K. Three molybdenum alloy wires; Mo + 1.1 wt% hafnium carbide (MoHfC), Mo + 25 wt% W + 1.1 wt% hafnium carbide (MoHfC+25W) and Mo + 45 wt% W + 1.1 wt% hafnium carbide (MoHfC+45W), and a W + 0.4 wt% hafnium carbide (WHfC) tungsten alloy wire were evaluated.The tensile strength of all wires studied was found to have a positive strain rate sensitivity. The strain rate dependency increased with increasing temperature and is associated with grain broadening of the initial fibrous structures. The hafnium carbide dispersed W-base and Mo-base alloys have superior tensile and stress-rupture properties than those without HfC. On a density compensated basis the MoHfC wires exhibit superior tensile and stress-rupture strengths to the WHfC wires up to approximately 1400 K. Addition of tungsten in the Mo-alloy wires was found to increase the long-term stress-rupture strength at temperatures above 1400 K.

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