Research on Stress Threshold of Stress Corrosion Cracking of Inconel 718 Alloy Hold-down Spring

Chen Liang; Pang Hua; Song Xiaoming; Liu Lili

doi:10.13832/j.jnpe.2015.S2.0097

Volume 36 Issue S2

Feb. 2025

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Chen Liang, Pang Hua, Song Xiaoming, Liu Lili. Research on Stress Threshold of Stress Corrosion Cracking of Inconel 718 Alloy Hold-down Spring[J]. Nuclear Power Engineering, 2015, 36(S2): 97-101. doi: 10.13832/j.jnpe.2015.S2.0097

Citation:

Chen Liang, Pang Hua, Song Xiaoming, Liu Lili. Research on Stress Threshold of Stress Corrosion Cracking of Inconel 718 Alloy Hold-down Spring[J]. Nuclear Power Engineering, 2015, 36(S2): 97-101. doi: 10.13832/j.jnpe.2015.S2.0097

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Research on Stress Threshold of Stress Corrosion Cracking of Inconel 718 Alloy Hold-down Spring

doi: 10.13832/j.jnpe.2015.S2.0097

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2015-10-10
Rev Recd Date: 2015-11-20

Available Online: 2025-02-15

Abstract

Abstract

The proper heat treatment should be adopted to avoid those that have harmful delta phase along the grain boundary of Inconel 718 alloy, so it will not sensitive to the stress corrosion cracking in primary water condition. And more, stress threshold should be kept below 75%~80% of yield strength to avoid the stress corrosion cracking at stress concentrators, such as fillets. The design threshold stress value of hold-down spring, 931MPa（135ksi） is appropriate, but not conservative.
- Stress corrosion cracking,
- Nickel-base alloy,
- Hold-down spring,
- Stress threshold