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Research and Development of Non-quenched and Tempered Steel F28MnSiVTiRE with High Strength and Toughness
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Zhen-dong Song1, Yan Zhou2, Zhi-guo Hui1, Xiang-dong Bu1, Jing Yang1
Science & Technology of Baotou Steel | 2022, 48(5) : 77 - 80
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Science & Technology of Baotou Steel | 2022, 48(5): 77-80
• Quality of Variety and Experiment and Research •
Research and Development of Non-quenched and Tempered Steel F28MnSiVTiRE with High Strength and Toughness
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Zhen-dong Song1, Yan Zhou2, Zhi-guo Hui1, Xiang-dong Bu1, Jing Yang1
Affiliations
  • 1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2 Special Steel Branch Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2022-10-25
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Such elements that could refine grain as V, Nb, Ti, Al and rare earth (RE) are added into the medium carbon steel as well as the stable compound formed by N, C and elements that could refine grain is used to refine the austenite grain and increase the strength and toughness of non-quenched and tempered steel. The stable compound formed by N, C, V, Nb, Ti and Al are observed with metallographic microscope and transmission electron microscope so that the non-quenched and tempered ferrite-pearlite steel is successfully developed. Its yield strength is greater than 550 MPa, tensile strength is greater than 780 MPa, hardness (HB) is not less than 210, elongation is greater than 18%, reduction of area is greater than 45% and impact value of V-notch at room temperature is greater than 50 J. Compared with common non-quenched and tempered steel, the non-quenched and tempered steel F28MnSiVTiRE is with such advantages as high strength and toughness and free cutting so that it could be used for machining such components as vehicle crankshaft and engine connecting rod.

non-quenched and tempered steel  /  microalloying  /  high strength and toughness
Zhen-dong Song, Yan Zhou, Zhi-guo Hui, Xiang-dong Bu, Jing Yang. Research and Development of Non-quenched and Tempered Steel F28MnSiVTiRE with High Strength and Toughness[J]. Science & Technology of Baotou Steel, 2022 , 48 (5) : 77 -80 .
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Year 2022 volume 48 Issue 5
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  • Receive Date：2022-07-26
  • Online Date：2025-11-24
  • Published：2022-10-25
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  • Received：2022-07-26
Affiliations
    1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    2 Special Steel Branch Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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