Ultrastrong and stress corrosion cracking-resistant martensitic steels
نویسندگان
چکیده
This study aims to reveal the atomic-scale effects of tempering on complex substructures and stress corrosion cracking (SCC) resistance high-strength martensitic steels. The SCC strength boron-doped Fe-0.3C-0.3Si-1.0Mn-1.0Ni-0.5Cr (wt%) steel increase concurrently without low-temperature tempering. Notably, degradation caused by is in contrast with known effect. To explore this unexpected result, subboundaries inside microstructure are investigated via atomic-nano-micro-scale analyses. strongly segregated carbon at lath boundaries during a precursor harmful cementite, which acts as severe initiation sites. Eventually, intensive crack grew along boundaries, deteriorating material.
منابع مشابه
Stress Corrosion Cracking Resistance of Martensitic Stainless Steels for Transmutation Applications
متن کامل
Stress Corrosion Cracking and Hydrogen Embrittlement of Martensitic Alloy EP-823
...................................................................................................................... iii TABLE OF CONTENTS ................................................................................................... iv LIST OF TABLES ............................................................................................................ vii LIST OF FIGURES ............
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Characteristics of tempered martensite embrittlement (TME), hydrogen embrittlement (HE), and stress corrosion cracking (SCC) in high-strength steels are reviewed. Often, it is important to determine unambiguously by which of these mechanisms failure occurred, in order to suggest the right actions to prevent failure recurrence. To this aim, samples made of high-strength AISI 4340 alloy steel wer...
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ژورنال
عنوان ژورنال: Acta Materialia
سال: 2022
ISSN: ['1873-2453', '1359-6454']
DOI: https://doi.org/10.1016/j.actamat.2022.118291