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The effects of different heat treatment processes on the microstructure and mechanical properties of RM80 steel were studied by means of scanning electron microscopy, Rockwell hardness tester and universal testing machine. As quenching temperature increases, carbides in RM80 steel gradually dissolve and the original austenite grains continue to grow. During tempering process, the structure of RM80 steel changes from tempered troostite to tempered sorbite, and martensite can still be observed in the structure of RM80 that is tempered after quenching at a higher temperature. After quenching at 1 150 ℃ and then three times of tempering at 550 ℃, RM80 steel finally has a good match between strength and plasticity, with a yield strength of 1 244 MPa, a tensile strength of 1 590 MPa, and an elongation of 12.0%.

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采用扫描电镜、洛氏硬度计和万能试验机研究了不同热处理工艺对RM80钢显微组织和力学性能的影响。结果表明,随着淬火温度升高,RM80钢中碳化物逐渐溶解,原奥氏体晶粒不断长大;在回火过程中,RM80组织由回火屈氏体转变为回火索氏体,且在较高温度淬火再回火后的RM80组织中仍能看到马氏体形态。经1 150 ℃淬火和550 ℃三次回火后,RM80钢可以实现强度和塑性的良好匹配,其屈服强度为1 244 MPa,抗拉强度为1 590 MPa,延伸率为12.0%。

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陈刚(1965—),男,湖南长沙人,博士,教授,主要研究方向为异种金属焊接、快速凝固与喷射沉积、粉末冶金及金属注射成形、高熵合金及其涂层等。

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陈刚(1965—),男,湖南长沙人,博士,教授,主要研究方向为异种金属焊接、快速凝固与喷射沉积、粉末冶金及金属注射成形、高熵合金及其涂层等。

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陈刚(1965—),男,湖南长沙人,博士,教授,主要研究方向为异种金属焊接、快速凝固与喷射沉积、粉末冶金及金属注射成形、高熵合金及其涂层等。

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热处理工艺对双金属带锯条背材用钢RM80组织和性能的影响
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陈刚 1 , 孙瑜蔓 1 , 苏斌 1 , 曾斌 2 , 齐江华 2
矿冶工程杂志 | 材料 2023,43(5): 174-177
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矿冶工程杂志 | 材料 2023, 43(5): 174-177
热处理工艺对双金属带锯条背材用钢RM80组织和性能的影响
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陈刚1, 孙瑜蔓1, 苏斌1, 曾斌2, 齐江华2
作者信息
  • 1.湖南大学材料科学与工程学院,湖南 长沙 410012
  • 2.湖南华菱涟源钢铁有限公司 技术中心,湖南 娄底 417009
  • 陈刚(1965—),男,湖南长沙人,博士,教授,主要研究方向为异种金属焊接、快速凝固与喷射沉积、粉末冶金及金属注射成形、高熵合金及其涂层等。

Effect of Heat Treatment Process on Structure and Properties of RM80 Steel for Bimetal Band Saw Blade
Gang CHEN1, Yuman SUN1, Bin SU1, Bin ZENG2, Jianghua QI2
Affiliations
  • 1.School of Materials Science and Engineering, Hunan University, Changsha 410012, Hunan, China
  • 2.Technical Center, Hunan Valin Lianyuan Iron and Steel Co Ltd, Loudi 417009, Hunan, China
出版时间: 2023-10-01 doi: 10.3969/j.issn.0253-6099.2023.05.039
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采用扫描电镜、洛氏硬度计和万能试验机研究了不同热处理工艺对RM80钢显微组织和力学性能的影响。结果表明,随着淬火温度升高,RM80钢中碳化物逐渐溶解,原奥氏体晶粒不断长大;在回火过程中,RM80组织由回火屈氏体转变为回火索氏体,且在较高温度淬火再回火后的RM80组织中仍能看到马氏体形态。经1 150 ℃淬火和550 ℃三次回火后,RM80钢可以实现强度和塑性的良好匹配,其屈服强度为1 244 MPa,抗拉强度为1 590 MPa,延伸率为12.0%。

双金属带锯条  /  RM80钢  /  热处理  /  显微组织  /  淬火  /  回火  /  碳化物

The effects of different heat treatment processes on the microstructure and mechanical properties of RM80 steel were studied by means of scanning electron microscopy, Rockwell hardness tester and universal testing machine. As quenching temperature increases, carbides in RM80 steel gradually dissolve and the original austenite grains continue to grow. During tempering process, the structure of RM80 steel changes from tempered troostite to tempered sorbite, and martensite can still be observed in the structure of RM80 that is tempered after quenching at a higher temperature. After quenching at 1 150 ℃ and then three times of tempering at 550 ℃, RM80 steel finally has a good match between strength and plasticity, with a yield strength of 1 244 MPa, a tensile strength of 1 590 MPa, and an elongation of 12.0%.

bimetal band saw blade  /  RM80 steel  /  heat treatment  /  microstructure  /  quenching  /  tempering  /  carbide
陈刚, 孙瑜蔓, 苏斌, 曾斌, 齐江华. 热处理工艺对双金属带锯条背材用钢RM80组织和性能的影响. 矿冶工程杂志, 2023 , 43 (5) : 174 -177 . DOI: 10.3969/j.issn.0253-6099.2023.05.039
Gang CHEN, Yuman SUN, Bin SU, Bin ZENG, Jianghua QI. Effect of Heat Treatment Process on Structure and Properties of RM80 Steel for Bimetal Band Saw Blade[J]. Mining and Metallurgical Engineering, 2023 , 43 (5) : 174 -177 . DOI: 10.3969/j.issn.0253-6099.2023.05.039
2023年第43卷第5期
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doi: 10.3969/j.issn.0253-6099.2023.05.039
  • 接收时间:2023-04-27
  • 首发时间:2026-03-05
  • 出版时间:2023-10-01
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  • 收稿日期:2023-04-27
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    1.湖南大学材料科学与工程学院,湖南 长沙 410012
    2.湖南华菱涟源钢铁有限公司 技术中心,湖南 娄底 417009
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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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