A study on the microstructural evolution and subgrain size dependent constitutive equation of a type of maraging steel in the solid solution treatment process - 文章详情页

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00Cr12Ni9Mo4Cu2　is　an　ultra-　high　strength,　maraging　stainless　steel.　Optical　microscopy,　microhardness　measurement,　scanning　electron　microscopy　(SEM),　and　transmission　electronic　microscopy　(TEM)　were　used　to　quantitatively　investigate　the　effect　of　the　solid　solution　parameters　on　the　grain　size　and　the　secondary　phases　of　the　steel.　It　was　found　that　the　grain　size　increased　from　8.5　um　to　28　um　when　the　solid　solution　temperature　was　increased　from　960　°C　to　1040　°C.　Meanwhile,　the　strength　of　the　alloy　increased　from　822　MPa　to　1054　MPa.　However,　when　the　temperature　was　increased　from　1040　°C　to　1100　°C,　the　grain　size　rose　dramatically　to　55　um,　and　the　strength　of　the　alloy　decreased　from　1054　MPa　to　782　MPa.　Most　of　the　original　carbides　were　dissolved　when　the　solid　solution　temperature　increased　up　to　1040　°C.　Finally,　a　constitutive　equation　based　on　the　evolution　of　the　subgrain　size　is　proposed,　clarifying　the　relationship　between　the　mechanical　properties　and　microstructures.　©　2021　The　Author(s).　Published　by　IOP　Publishing　Ltd.

关键词：

Constitutive equations Nickel metallography Maraging steel Grain size and shape Molybdenum alloys Scanning electron microscopy Copper metallography High strength steel Solid solutions Solution mining Nickel steel Chromium metallography Molybdenum metallography Chromium steel Molybdenum steel Copper alloys Microstructural evolution Carbides Chromium alloys Advanced high strength Steel

作者机构：

[ 1 ] [Zhu, Y.Z.]The Provincial Gradient Hard Materials Innovation Centre, North China University of Technology, Beijing, China
[ 2 ] [Zhao, T.Y.]The Provincial Gradient Hard Materials Innovation Centre, North China University of Technology, Beijing, China
[ 3 ] [Huang, H.]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Peng, H.]The Provincial Gradient Hard Materials Innovation Centre, North China University of Technology, Beijing, China
[ 5 ] [Hu, F.W.]The Provincial Gradient Hard Materials Innovation Centre, North China University of Technology, Beijing, China
[ 6 ] [Yin, S.Y.]The Provincial Gradient Hard Materials Innovation Centre, North China University of Technology, Beijing, China

通讯作者信息：

[zhu, y.z.]the provincial gradient hard materials innovation centre, north china university of technology, beijing, china

电子邮件地址：

tozyz1@163.com

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