Internal oxidation behaviour of Fe-Mn-Al-C duplex light-weight steels with good combination of strength and ductility

Peng, Wei; Wu, Zhaoyu; Xu, Yulai; Ran, Qingxuan; Xu, Wanjian; Li, Jun; Xiao, Xiudi

doi:10.1016/j.corsci.2017.03.005

Cited by 16 publications

(9 citation statements)

References 45 publications

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“…As for the structure of the oxide layers formed, the outer layer was mainly composed of Mn 2 O 3 and Mn 3 O 4 , while the Al 2 O 3 was mainly observed in the ferrite layer [20]. Based on previous studies [13,21], internal oxidation is also expected, as it was found that increased C content not only worsens the high-temperature oxidation resistance, but also increases the internal oxidation area and provides more time for decarburisation of the austenite, leading to greater diffusion of Mn to the outside and reaction with O [13]. The preferential oxidation of Mn promotes the phase transformation of austenite to ferrite, which opens pathways for Al diffusion.…”

Section: Introductionmentioning

confidence: 97%

“…Studies have been carried out on the high-temperature oxidation behaviour of Fe-Mn-Al-C steels. It was found that the addition of Al promotes the formation of an Al 2 O 3 layer, which prevents further oxidation and has a high protective effect [13][14][15][16][17][18]. Furthermore, an increasing C content increases the weight gain per unit area and the thickness of the oxide layer formed, which leads to the deterioration of the high-temperature oxidation resistance [13].…”

Section: Introductionmentioning

confidence: 99%

“…It was found that the addition of Al promotes the formation of an Al 2 O 3 layer, which prevents further oxidation and has a high protective effect [13][14][15][16][17][18]. Furthermore, an increasing C content increases the weight gain per unit area and the thickness of the oxide layer formed, which leads to the deterioration of the high-temperature oxidation resistance [13]. Steels with Mn content lower than 7.5 wt.% formed layers consisting of Al 2 O 3 and Fe-like oxides, while the oxide layer was highly enriched in Mn for steels with Mn content greater than 7.5 wt.% [15].…”

Section: Introductionmentioning

confidence: 99%

“…The preferential oxidation of Mn promotes the phase transformation of austenite to ferrite, which opens pathways for Al diffusion. Therefore, Al 2 O 3 is enriched at the boundary of the inner oxidation layer of austenite [13]. The higher the temperature (>850 • C) of oxidation, the more Al 2 O 3 -rich oxide layers are formed, providing better oxidation resistance [21].…”

Section: Introductionmentioning

confidence: 99%

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High-Temperature Oxidation Behaviour of Duplex Fe-Mn-Al-Ni-C Lightweight Steel

et al. 2022

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Lightweight Fe-Mn-Al-Ni-C steels are an attractive material, due to the combination of low density, high elongation, and yield strength. However, the high Al content is also interesting from the point of view of high-temperature resistance. High-temperature resistance is important for high-temperature applications and oxidation during heat treatment. Oxidation tests at 700, 800 and 900 °C were carried out to investigate the oxidation rates. Oxidation at 700 °C resulted in slight decarburisation, which was reflected in a slight weight loss in the thermogravimetric analysis. In contrast, the weight in the thermogravimetric analysis increased at 800 and 900 °C and the kinetics followed a parabolic law. The higher the temperature, the more weight is gained and the thicker the oxide layer becomes. The oxidation layer at 800 and 900 °C consisted mainly of hematite and magnetite, with minor amounts of wüstite, alumina and hercynite. Preferential oxidation of austenite was also observed, as it has an increased Mn content. In addition, ferrite had an increased content of Al and Ni, which provide additional oxidation resistance.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High-Temperature Oxidation Behaviour of Duplex Fe-Mn-Al-Ni-C Lightweight Steel

et al. 2022

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“…Previously, manganese was thought to be a key element in influencing steel microstructure, mechanical, and oxidation resistance properties [2]- [5]. It is well known that Mn is an austenite stabilizer [4], [6]. Several studies [2]- [3], [5]- [7] investigated and discussed the structure and properties of Fe-Mn steel with manganese concentrations ranging from 10% to 50% by weight .…”

Section: Introductionmentioning

confidence: 99%

Structure, Mechanical Properties, and Oxidation Resistance of Mn-Rich Fe-Mn-Al Alloys

Desiati¹,

Sutiawan²,

Sudiro³

et al. 2022

metal.

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In this study, Mn-rich Fe-Mn-Al alloys with different Al content (Al = 0, 3, and 5 % by weight) were fabricated from ferromanganese lumps using a conventional powder metallurgy technique. The samples were compacted in 1 cm steel dies using a load of 8 tons and then sintered at 1100 °C for 2 h in a tubular furnace under a vacuum condition of around 0.5 mbar. To evaluate the effect of Al addition to Fe-Mn-Al alloy, the Archimedes principle and Vickers hardness were applied to estimate the density and hardness of the compact alloys. Moreover, the high-temperature oxidation resistance of the alloy was evaluated at 800 °C for 8 cycles. The structure of the alloy before and after oxidation was studied by means of X-Ray Diffractometer and SEM-EDS. The XRD analysis results show that the FeMn-0Al alloy is mainly composed Fe3Mn7 phase, the presence of FeAl phase at 3 wt% Al, and Al8Mn5 phase at 5 wt% Al. The density and hardness of Fe-Mn-Al alloys decreased with the increased Al content. Fe-Mn-Al alloy without Al addition exhibits poor oxidation resistance since the first cycle of the test. The results of microstructural analysis showed that although the alloy with the addition of 3 wt% Al showed less mass gain after being exposed for 8 cycles at 800 °C, the Fe-Mn-Al alloy with 5 wt% tended to be more resistant to oxidation and had no cracking defects. The structure of the oxide formed on the surface of the alloy is composed of two layers (ie; outer and inner layer) which are affected by each alloy composition.

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Pitting corrosion resistance of sensitized type 2205 duplex stainless steel in hot concentrated seawater

Zeng

Yang

et al. 2019

J Solid State Electrochem

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Internal oxidation behaviour of Fe-Mn-Al-C duplex light-weight steels with good combination of strength and ductility

Cited by 16 publications

References 45 publications

High-Temperature Oxidation Behaviour of Duplex Fe-Mn-Al-Ni-C Lightweight Steel

High-Temperature Oxidation Behaviour of Duplex Fe-Mn-Al-Ni-C Lightweight Steel

Structure, Mechanical Properties, and Oxidation Resistance of Mn-Rich Fe-Mn-Al Alloys

Pitting corrosion resistance of sensitized type 2205 duplex stainless steel in hot concentrated seawater

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