Annealing induced recovery of long-term thermal aging embrittlement in a duplex stainless steel

Li, S.L.; Zhang, Hailong; Wang, Y.L.; Li, S.X.; Zheng, Keyan; Xue, Fei; Wang, X.T.

doi:10.1016/j.msea.2012.11.046

Cited by 70 publications

(34 citation statements)

References 22 publications

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“…This would enable prolonged utilization of intrinsic damage resistance that is intrinsic, but consumable (that is, it is gradually used up) in alloys exposed to repeated mechanical loads, which arise from plasticity 62,78 or transformation 58,79 micro-mechanisms. Thermally induced embrittlement effects in duplex stainless steels, which is due to G-phase formation (a CrNi-silicide), can be removed by annealing, enabling the part's re-use 80 . Similarly, cut-edge damage in sheet metal can be reduced by specifically designed cutting treatments 81 .…”

Section: Longevity By Corrosion Protection Lifetime Extension and Reusementioning

confidence: 99%

Strategies for improving the sustainability of structural metals

Raabe

Taşan

Olivetti

2019

Nature

340

143

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Metagoods 16% Vehicles 13% Industrial equipment 16% Construction 55% Re ne Smelter Mine Fabrication Manufacture Use New Scrap Old Scrap Land ll Carbon scrap/nickel to other scrap markets Stock End-of-life products c Transportation 19% Electronics 5% Chemicals 1% Industrial machinery 30% Household appliances and metal goods 28% Building and infrastructure17% Mine Rutile Mill product Ti ingot Manufacturing scrap Mill scrap End-of-life products Use Ferrotitanium Ti sponge TiO 2 feed TiCl 4

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Section: Longevity By Corrosion Protection Lifetime Extension and Reusementioning

confidence: 99%

Strategies for improving the sustainability of structural metals

Raabe

Taşan

Olivetti

2019

Nature

340

143

View full text Add to dashboard Cite

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“…A TEM sample was cut from the fatigue fracture surface of the unaged and aged CDSS under a strain amplitude of 0.3% and 0.6%. Our previous studies have shown that the mechanical property degradation of CDSS induced by thermal aging is mainly caused by the hardening and embrittlement in ferrite [17,18]. Thus, the observation of the deformed structures of the fatigued samples is focused In order to investigate the deformation mechanism in the unaged and aged CDSS during cyclic loading under different strain amplitudes, the deformed microstructures were observed in TEM.…”

Section: Resultsmentioning

confidence: 99%

“…It was found that the impact toughness of CDSS decreased with an increasing aging time and the ductile-to-brittle transition in the impact fracture occurred after long-term thermal aging [17]. The ferrite hardness increased with the aging time, but the hardness in austenite had no obvious change [18,19]. The tensile strength of CDSS was not strongly affected by thermal aging, but the plasticity had a significant decrease after long-term aging [20].…”

Section: Introductionmentioning

confidence: 98%

Effects of Thermal Aging on the Low Cycle Fatigue Behaviors of Cast Duplex Stainless Steels

Wang

2019

Metals

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The low cycle fatigue (LCF) behaviors of cast duplex stainless steel (CDSS) thermally aged at different times were investigated under different strain amplitudes. The effects of thermal aging on the LCF lives of CDSS are closely related to the strain amplitude. At a low strain amplitude, the fatigue life of the material increases significantly after thermal aging, while the LCF life decreases with an increasing aging time at a high strain amplitude. After thermal aging at 400 °C for 10,000 h, the fatigue fracture morphologies of CDSS change from fatigue fringes to mixture features including fatigue fringes in austenite and cleavage cracks in ferrite. Severe plastic deformation in ferrite of the aged CDSS under a high strain amplitude causes the cleavage cracking of ferrite. The premature failure of ferrite accelerates the propagation of fatigue crack and shortens the fatigue life at a high strain amplitude.

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“…One thing is common in all the samples; the resistance to corrosion increases and sensitivity to fluctuation in corrosion rate decreases as immersion duration/ soaking time is increased. This could be attributed to the positive recovery in the sensitized steel [25][26].…”

Section: Discussionmentioning

confidence: 99%

Experimental Analysis of Corrosive Impact of Oxidizing and Non-oxidizing Environment on Sensitized Welded and Unwelded Samples of AISI 316

Agbokwor¹,

Obikwelu²,

Neife³

2019

AJMME

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An experimental analysis was carried out to investigate the corrosivity of sensitized welded and unwelded austenitic stainless steel AISI 316, in oxidizing (H 2 SO 4 ) and non-oxidizing (HCL) media. The selected samples were cut into several equal pieces. To induce sensitization, the samples were heated and soaked at 750°C at different soaking time intervals such as 30 minutes, 60 minutes, 180minutes, 300 minutes and 600 minutes followed by water quenching. The sensitized welded and unwelded samples each were subjected to immersion duration test in the oxidizing and non-oxidizing media for 5, 10,15,20,25, 30, 35, 40, 45, and 50 minutes, respectively. It was concluded from the results obtained that corrosion rate of welded and unwelded decreases as soaking time and immersion duration increases at constant soaking temperature, in nonoxidizing medium of hydroChloric acid (HCL); but the decrease in corrosion rate is more in the unwelded samples. In the oxidizing medium of sulphoric acid (H 2 SO 4 ); corrosion rate of the samples decreased as immersion duration/soaking time increases. However, the welded samples experienced erratic behaviour in the oxidizing medium, having a lower corrosion rate than their unwelded counterpart surprisingly, at immersion duration between 25-50 minutes as soaking time increases at constant soaking temperature of 750°C.

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Annealing induced recovery of long-term thermal aging embrittlement in a duplex stainless steel

Cited by 70 publications

References 22 publications

Strategies for improving the sustainability of structural metals

Strategies for improving the sustainability of structural metals

Effects of Thermal Aging on the Low Cycle Fatigue Behaviors of Cast Duplex Stainless Steels

Experimental Analysis of Corrosive Impact of Oxidizing and Non-oxidizing Environment on Sensitized Welded and Unwelded Samples of AISI 316

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