Hydrogen Effect on Cumulation of Failure, Mechanical Properties, and Fracture Toughness of Ni-Cr Alloys

Joint Authors

Balitskii, Alexander
Ivaskevich, Ljubomyr

Source

Advances in Materials Science and Engineering

Issue

Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2019-10-09

Country of Publication

Egypt

No. of Pages

8

Abstract EN

Influence of hydrogen pressure and internal hydrogen contents on short-term strength, plasticity, and plane-stress fracture toughness of 05Cr19Ni55 alloys at pressure up to 30 MPa was investigated.

It was established that the crack resistance parameters Kc of alloys decrease with displacement rates decreasing similar to elongation (δ) and reduction of area (ψ) of smooth specimens.

The maximum hydrogen influence is achieved at strain rate speeds less than 0.1 mm/min and hydrogen pressures above 15 MPa when δ and Kc of prehydrogenated samples are reduced by 3 times.

The plane-strain conditions required for the evaluation of KІc were fulfilled on compact tension 05Cr19Ni55 alloy specimens with thickness above 20 mm under hydrogen pressure 30 MPa and preliminary dissolved hydrogen concentration above 20 wppm.

Regardless of the test conditions, the value of the characteristics of plasticity (δ, ψ) and fracture toughness (Kс) of alloy (TO1) specimens oriented in the transverse direction (orientation TV) is significantly lower than that of specimens oriented in the longitudinal direction (LT).

Alloy cleaning by vacuum arc remelting and optimization of heat treatment regime increase their hydrogen resistance.

American Psychological Association (APA)

Balitskii, Alexander& Ivaskevich, Ljubomyr. 2019. Hydrogen Effect on Cumulation of Failure, Mechanical Properties, and Fracture Toughness of Ni-Cr Alloys. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1119795

Modern Language Association (MLA)

Balitskii, Alexander& Ivaskevich, Ljubomyr. Hydrogen Effect on Cumulation of Failure, Mechanical Properties, and Fracture Toughness of Ni-Cr Alloys. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1119795

American Medical Association (AMA)

Balitskii, Alexander& Ivaskevich, Ljubomyr. Hydrogen Effect on Cumulation of Failure, Mechanical Properties, and Fracture Toughness of Ni-Cr Alloys. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1119795

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1119795