scholarly journals Effects of Secondary-Phase Formation on the Electrochemical Performance of a Wire Arc Additive Manufactured 420 Martensitic Stainless Steel under Different Heat Treatment Conditions

2021 ◽  
Author(s):  
Salar Salahi ◽  
Mahya Ghaffari ◽  
Alireza Vahedi Nemani ◽  
Ali Nasiri
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Electrochemical Performance ◽  
Phase Formation ◽  
Martensitic Stainless Steel ◽  
Secondary Phase ◽  
Treatment Conditions ◽  
Secondary Phase Formation

scholarly journals Fatigue strength evaluation of a 13%Cr supermartensitic stainless steel by the thermographic method

2021 ◽  
Vol 349 ◽  
pp. 02019
Author(s):  
Sérgio S.M. Tavares ◽  
Bruna Abib ◽  
Paulo Kenedi ◽  
Odivaldo C. Alves ◽  
Brígida B. Almeida
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Fatigue Strength ◽  
Martensitic Stainless Steel ◽  
Heat Treatment Condition ◽  
Magnetic Methods ◽  
Treatment Conditions ◽  
Super Martensitic Stainless Steel ◽  
Dynamic Loadings ◽  
Hot Rolled

The fatigue limits of a 13Cr super-martensitic stainless steel from a hot rolled seamless tube were determined for three heat treatment conditions, including the as received quenched and tempered (QT) condition, quenched (Q), and quenched and double tempered (Q-DT). These heat treatments were applied to produce different microstructures and different tensile mechanical properties. The microstructures were characterized by microscopy and magnetic methods. The fatigue strength was accessed through the utilization of the thermographic technique. The results show that fatigue limits measured were between 38% and 44% of the ultimate strength. The as quenched condition gave the higher fatigue limit (444 MPa). However, the material has the lower dutility at this condition. The results aid to decide the best heat treatment condition and give support to design in applications where dynamic loadings are expected

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