Strength Differential Effect in Martensitic Stainless Steel Under Quenching and Partitioning Heat Treatment Condition

2019 ◽  
pp. 35-42
Author(s):  
Sebastian Dieck ◽  
Martin Ecke ◽  
Paul Rosemann ◽  
Sebastian Fritsch ◽  
Martin Franz-Xaver Wagner ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Differential Effect ◽  
Treatment Condition ◽  
Martensitic Stainless Steel ◽  
Heat Treatment Condition ◽  
Quenching And Partitioning ◽  
Strength Differential Effect ◽  
Strength Differential

Effect of Post-Weld Heat Treatment on Hardness in Superduplex Stainless Steel ASTM A890/A890M - Grade 6A

2020 ◽  
Vol 1012 ◽  
pp. 296-301
Author(s):  
Clélia Ribeiro de Oliveira ◽  
Eloá Lopes Maia ◽  
Solange T. da Fonseca ◽  
Marcelo Martins ◽  
Julián Arnaldo Ávila Díaz ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Arc Welding ◽  
Treatment Condition ◽  
Heat Treatment Condition ◽  
Shielded Metal Arc Welding ◽  
Metal Arc Welding ◽  
Superduplex Stainless Steel ◽  
Secondary Austenite ◽  
Welding Processes

Superduplex stainless steel alloy exhibit high mechanical and corrosion resistance, which main industrial application is in the petrochemical industry. The manufacture and maintenance of such equipment usually involve welding processes, followed by post-welded heat treatment and it often becomes impossible to apply heat treatments. Thereby, the purpose of this work is to verify the effect of a post-welded heat treatment on shielded metal arc welding in steel grade ASTM A890/A890M - grade 6A. The microstructure in the as-welded condition consisted of austenite, secondary austenite, and ferrite phases and, the post-welded heat treatment condition exhibited only austenite and ferrite. The hardness in the melt zone reached values of 300 HV after welding and, the value was reduced to 260 HV in the post-welded heat treatment condition.

Microstructure Control of a Low Carbon Martensitic Stainless Steel by Quenching and Partitioning Heat Treatment

2012 ◽  
Vol 706-709 ◽  
pp. 2338-2341
Author(s):  
Toshihiro Tsuchiyama ◽  
J. Tobata ◽  
T. Tao ◽  
Nobuo Nakada ◽  
Setsuo Takaki
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Martensitic Stainless Steel ◽  
Low Carbon ◽  
Lower Yield Stress ◽  
Quenching And Partitioning ◽  
Aisi Type ◽  
Work Hardening Rate ◽  
Untransformed Austenite ◽  
Steel Aisi

Quenching and partitioning (Q&P) treatment was applied to a commercial low carbon martensitic stainless steel, AISI Type 410 (Fe-12Cr-0.1C). The condition of partial quenching and partitioning was optimized with consideration of the untransformed austenite fraction and stability of austenite (carbon concentration in solid solution). As a result, the amount of retained austenite could be increased up to approximately 15 vol%. Tensile testing revealed that the specimens after Q&P heat treatment exhibited lower yield stress and larger work hardening rate compared with quench-and-tempered (Q&T) specimens under the same tensile strength level, resulting in a significantly better strength-ductility balance. It was confirmed that the TRIP effect had contributed to the mechanical property.

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

Sign in / Sign up

Export Citation Format

Share Document