| 锻后固溶预处理对H13钢退火组织和冲击性能的影响 |
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| 引用本文： | 孙立国,周健,马党参,迟宏宵. 锻后固溶预处理对H13钢退火组织和冲击性能的影响[J]. 金属热处理, 2021, 46(2): 130-135. DOI: 10.13251/j.issn.0254-6051.2021.02.022 |
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| 作者姓名： | 孙立国 周健 马党参 迟宏宵 |
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| 作者单位： | 1.抚顺特殊钢股份有限公司, 辽宁 抚顺 113001; 2.钢铁研究总院 特殊钢研究所, 北京 100081 |
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| 摘 要： | 利用相分析、SEM及TEM试验方法,结合Thermo-Calc热力学软件计算了H13钢平衡相图,研究了不同固溶预处理及等温球化退火工艺对H13热作模具钢的组织和冲击性能的影响.结果表明:H13钢经1000、1050和1100℃固溶预处理后,随着固溶温度的升高,以V为主的MC型未溶碳化物数量逐渐减少,1100℃固溶预处理...
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| 关 键 词： | H13钢 固溶预处理 等温球化退火 MC碳化物 冲击性能 |
| 收稿时间： | 2020-07-29 |
Effect of solution pretreatment after forging on annealed microstructure and impact property of H13 steel |
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| Sun Liguo,Zhou Jian,Ma Dangshen,Chi Hongxiao. Effect of solution pretreatment after forging on annealed microstructure and impact property of H13 steel[J]. Heat Treatment of Metals, 2021, 46(2): 130-135. DOI: 10.13251/j.issn.0254-6051.2021.02.022 |
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| Authors: | Sun Liguo Zhou Jian Ma Dangshen Chi Hongxiao |
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| Affiliation: | 1. Fushun Special Steel Co., Ltd., Fushun Liaoning 113001, China; 2. Special Steels Research Institute, Central Iron & Steel Research Institute, Beijing 100081, China |
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| Abstract: | Effects of different solution pretreatment and isothermal spheroidizing on the microstructure and impact property of H13 hot work die steel were studied by means of phase analysis,SEM,TEM,and equilibrium phase diagram of the H13 steel was calculated by ThermoCalc software.The results show that after solution pretreatment at 1000℃,1050℃and 1100℃,the quantity of MC type undissolved carbides dominated by V gradually decreases with the increase of solution temperature.After solution pretreatment at 1100℃,undissolved carbides are basically dissolved and the grains are coarsened.After solution pretreatment and isothermal spheroidizing,the distribution uniformity and roundness of the carbides are improved,but the grain size is coarsened at 1100℃,and a coarse network is formed and nucleated along the coarse martensite interface during the annealing process,which reduces the structure uniformity.The impact property of the H13 steel is better when solution pretreated at 1000℃and then isothermally spheroidized,and with the increase of solution pretreatment temperature,the impact property of the tested steel shows a significant downward trend. |
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| Keywords: | H13 steel solution pretreatment isothermal spheroidizing MC carbides impact property |
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