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Stress corrosion high-flux evaluation method based on multi-section sample

A technology of stress corrosion and evaluation method, applied in the direction of weather resistance/light resistance/corrosion resistance, measuring device, using stable tension/pressure to test the strength of materials, etc. problems, to achieve the effect of improving the test efficiency and shortening the test time.

Inactive Publication Date: 2019-01-18
SUZHOU NUCLEAR POWER RES INST +2
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Problems solved by technology

However, at present, the standard specimens used in the evaluation of stress corrosion susceptibility all have a parallel section with a single cross-sectional area. To complete a subject experiment, the test period is long, the result repeatability is poor, the test efficiency is low, and the test cost is high.

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  • Stress corrosion high-flux evaluation method based on multi-section sample
  • Stress corrosion high-flux evaluation method based on multi-section sample

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the embodiment shown in accompanying drawing:

[0025] A high-throughput evaluation method for stress corrosion corrosion based on multi-section samples, using figure 1 The test device includes an autoclave and a test device. The test device includes a connecting mechanism for fixing the sample 1, a loading mechanism for loading stress on the sample 1 on the connecting mechanism, a measuring device for measuring the stress corrosion data of the test piece, and a driving high-pressure A hydrochemical circulation system in which the water in the kettle is circulated in the autoclave, and a monitoring system for controlling the loading mechanism and the measuring device, including the following steps:

[0026] 1) A rod-shaped sample 1 has fixing parts at both ends, and a plurality of test unit sections 11 with the same cross-sectional shape are processed along the length direction of the sample 1 by ...

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Abstract

The invention discloses a stress corrosion high-flux evaluation method based on a multi-section sample. Fixed parts are arranged at the two ends of the rod-shaped sample; a plurality of test unit sections with the same cross section shapes are cut in a length direction of the sample; and a transition section for separating the two test unit sections is arranged between the every two adjacent testunit sections. The test unit sections are machined on the sample, and test results of the test unit sections with multiple sectional areas can be obtained in one test, so that the test time is greatlyshortened, and the test efficiency is improved.

Description

technical field [0001] The invention relates to a high-throughput evaluation method for stress corrosion based on multi-section samples. Background technique [0002] Stress corrosion in the industrial field is one of the key problems caused by component crack failure. Due to the long incubation period of stress corrosion cracking, it can also occur under lower stress and weaker corrosive media, so it is often difficult to find and easily cause serious consequences. [0003] Stress corrosion is mainly related to three factors: sensitive material, stress and corrosive medium. At present, the stress corrosion test is generally carried out in accordance with the national standard GB / T 15970 "Stress Corrosion Test for Corrosion of Metals and Alloys". However, at present, the standard samples used in the evaluation of stress corrosion susceptibility all have a parallel section with a single cross-sectional area. To complete a subject experiment, the test cycle is long, the resu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N17/00
CPCG01N3/08G01N17/00
Inventor 蔡振梅金娜韩姚磊薛飞张国栋彭群家冯亚飞
Owner SUZHOU NUCLEAR POWER RES INST
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