Intercritical Annealing Temperature: Influence on the Mechanical Properties of Low Alloy Dual-Phase Fe/0.08C/0.4Mn Steel

被引：1

作者：

Ogunmefun, Anthony Olakunle ^{[1
]}

Jamiru, Tamba ^{[1
]}

Sadiku, Emmanuel Rotimi ^{[2
]}

Obadele, Babatunde Abiodun ^{[3
]}

Olorundaisi, Emmanuel ^{[4
]}

机构：

[1] Tshwane Univ Technol, Dept Mech Engn Mechatron & Ind Design, Pretoria, South Africa

[2] Tshwane Univ Technol, Inst NanoEngn Res, Dept Chem Met & Mat Engn, Pretoria, South Africa

[3] Univ Johannesburg, Ctr Nanoengn & Tribocorros, Sch Min Met & Chem Engn, Doornfontein Campus, Johannesburg, South Africa

[4] Tshwane Univ Technol, Dept Mech Engn, Pretoria, South Africa

来源：

2019 OPEN INNOVATIONS CONFERENCE (OI) | 2019年

关键词：

intercritical annealing temperature; microstructure; heat treatment; grain size; micro-indentation hardness; ultimate tensile strength; yield strength; HEAT-TREATMENT; MARTENSITE MORPHOLOGY; HARDENING BEHAVIOR; TENSILE PROPERTIES; VOLUME FRACTION; MICROSTRUCTURE; TOUGHNESS; STRENGTH; HARDNESS; AUSTENITE;

D O I：

10.1109/oi.2019.8908167

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A study has been made on the effects of inter-critical annealing temperature on the mechanical behavior of a low alloy dual phase Fe/0.083C/0.4Mn steel. Homogenization and normalization of the substrates via heat treatments were performed on low carbon manganese steel. The direct annealing heat treatments were carried out at 735 degrees C, 755 degrees C, 795 degrees C and 830 degrees C, and suddenly quenched in cold water. Dual phase ferrite martensite steel was obtained. Tensile and yield tests were determined through their relationship equation with hardness test at room temperature. Indentation analysis was carried out on the microstructure of each sample. The results revealed that the best mechanical properties in dual-phase steels, e.g., impact toughness and ductility, appear at the inter-critical temperature of 735 degrees C, highest strength at 755 degrees C, duplex microstructure were obtained when the temperature is higher than 800 degrees C, with the highest ductility properties at 830 degrees C.

引用

页码：141 / 146

页数：6

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