Abstract
A hydrogen embrittlement test apparatus was fabricated on a trial basis for the necessity of correctly evaluating the materidals for turbine blades in a turbopump used in a rocket engine. Using the apparatus, tensile tests were carried out on turbine blade materials for the liquid hydrogen engine, LE-7, as the first step of the basic test for turbine blade materials. Effects of the temperatures and high-pressure hydrogen atmosphere on the tensile properties of the materials were investigated. The materials tested include Inconel 718 and MAR-M247 LC DS. High-purity hydrogen and high-purity helium were used as test gases. Hydrogen was set to 19.7 MPa and helium to 0.5 MPa, and the test temperature was varied from the room temperature to 1000 K. As a result, severe hydrogen embrittlement occurred to both materials at close to the room temperature, and particularly, MAR-M247 LC DS broke down just after the elasticity region. Attention is required when the material is to be used near the room temperature. Both materials were little affected by the hydrogen embrittlement in the vicinity of the operating temperature. 12 refs., 4 figs., 4 tabs.
YOshida, M;
Watanabe, Y;
Kamijo, K;
[1]
Tajima, Y
[2]
- National Aerospace Laboratory, Tokyo (Japan)
- National Space Development Agency, Tokyo (Japan)
Citation Formats
YOshida, M, Watanabe, Y, Kamijo, K, and Tajima, Y.
Test apparatus and tensile tensile properties of LE-7 turbine blade materials in high pressure hydrogen conditions; Suiso zeisei shiken sochi no shisaku to LE-7 turbine zairyo (Inconel 718, MAR-M 247 LC DS)no koon koatsu suisochyu deno hippari tokusei.
Japan: N. p.,
1991.
Web.
YOshida, M, Watanabe, Y, Kamijo, K, & Tajima, Y.
Test apparatus and tensile tensile properties of LE-7 turbine blade materials in high pressure hydrogen conditions; Suiso zeisei shiken sochi no shisaku to LE-7 turbine zairyo (Inconel 718, MAR-M 247 LC DS)no koon koatsu suisochyu deno hippari tokusei.
Japan.
YOshida, M, Watanabe, Y, Kamijo, K, and Tajima, Y.
1991.
"Test apparatus and tensile tensile properties of LE-7 turbine blade materials in high pressure hydrogen conditions; Suiso zeisei shiken sochi no shisaku to LE-7 turbine zairyo (Inconel 718, MAR-M 247 LC DS)no koon koatsu suisochyu deno hippari tokusei."
Japan.
@misc{etde_10126832,
title = {Test apparatus and tensile tensile properties of LE-7 turbine blade materials in high pressure hydrogen conditions; Suiso zeisei shiken sochi no shisaku to LE-7 turbine zairyo (Inconel 718, MAR-M 247 LC DS)no koon koatsu suisochyu deno hippari tokusei}
author = {YOshida, M, Watanabe, Y, Kamijo, K, and Tajima, Y}
abstractNote = {A hydrogen embrittlement test apparatus was fabricated on a trial basis for the necessity of correctly evaluating the materidals for turbine blades in a turbopump used in a rocket engine. Using the apparatus, tensile tests were carried out on turbine blade materials for the liquid hydrogen engine, LE-7, as the first step of the basic test for turbine blade materials. Effects of the temperatures and high-pressure hydrogen atmosphere on the tensile properties of the materials were investigated. The materials tested include Inconel 718 and MAR-M247 LC DS. High-purity hydrogen and high-purity helium were used as test gases. Hydrogen was set to 19.7 MPa and helium to 0.5 MPa, and the test temperature was varied from the room temperature to 1000 K. As a result, severe hydrogen embrittlement occurred to both materials at close to the room temperature, and particularly, MAR-M247 LC DS broke down just after the elasticity region. Attention is required when the material is to be used near the room temperature. Both materials were little affected by the hydrogen embrittlement in the vicinity of the operating temperature. 12 refs., 4 figs., 4 tabs.}
place = {Japan}
year = {1991}
month = {Jan}
}
title = {Test apparatus and tensile tensile properties of LE-7 turbine blade materials in high pressure hydrogen conditions; Suiso zeisei shiken sochi no shisaku to LE-7 turbine zairyo (Inconel 718, MAR-M 247 LC DS)no koon koatsu suisochyu deno hippari tokusei}
author = {YOshida, M, Watanabe, Y, Kamijo, K, and Tajima, Y}
abstractNote = {A hydrogen embrittlement test apparatus was fabricated on a trial basis for the necessity of correctly evaluating the materidals for turbine blades in a turbopump used in a rocket engine. Using the apparatus, tensile tests were carried out on turbine blade materials for the liquid hydrogen engine, LE-7, as the first step of the basic test for turbine blade materials. Effects of the temperatures and high-pressure hydrogen atmosphere on the tensile properties of the materials were investigated. The materials tested include Inconel 718 and MAR-M247 LC DS. High-purity hydrogen and high-purity helium were used as test gases. Hydrogen was set to 19.7 MPa and helium to 0.5 MPa, and the test temperature was varied from the room temperature to 1000 K. As a result, severe hydrogen embrittlement occurred to both materials at close to the room temperature, and particularly, MAR-M247 LC DS broke down just after the elasticity region. Attention is required when the material is to be used near the room temperature. Both materials were little affected by the hydrogen embrittlement in the vicinity of the operating temperature. 12 refs., 4 figs., 4 tabs.}
place = {Japan}
year = {1991}
month = {Jan}
}