Improved mechanical properties and hydrogen environment assisted cracking resistance of a secondary hardening ultra-high strength steel via double aging treatment
Lijin Dong , Maozhang Wu , Dong Ling , Hongli Wang , Huaibei Zheng , Cheng Ma , Li Liu , Qinying Wang
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引用次数: 0
Abstract
Mechanical properties and hydrogen environment assisted cracking (HEAC) resistance of AerMet 100 steel after single and double aging treatments were investigated. The fracture toughness increased by 10 –25 % after double aging treatment due to the higher faction of reversed austenite. Stronger hydrogen traps formed after double aging treatment decreased hydrogen diffusion rates. The double aging treatment increased the KTH by 20–60 % while lowered the da/dtII by 25–70 %. The improvement of HEAC resistance was related to the suppressed hydrogen diffusion and partitioning to the crack tip by carbides and reversed austenite, along with the enhanced austenite stability by Ni enrichment.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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