| 5Cr型和3Cr—3Mo型热作工具钢的高温强度 |
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| 引用本文： | 孙培祯,赵建生,谢长生.5Cr型和3Cr—3Mo型热作工具钢的高温强度[J].材料研究学报,1990,4(4):303-308. |
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| 作者姓名： | 孙培祯 赵建生 谢长生 |
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| 作者单位： | 华中理工大学
(孙培祯，赵建生)，华中理工大学(谢长生) |
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| 摘 要： | 热作工具钢的高温强度随温度的变化呈明显的两阶段,利用唯象理论对这一现象作了描述。结果表明,可用σ_b=σ_b~o-Cexp(-Q/RT)描述强度随温度变化的趋势。由激活能 Q~(LT)和 Q~(HT)数值推知,在低温阶段回复软化的原因是 Snoek 气团对位错的钉扎作用随温度的升高而减小;在高温阶段回复软化的原因是位错的攀移所致。合金元素对 Q~(HT)有显著的影响。
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| 关 键 词： | 高温强度 热作工具钢 软化 |
| 收稿时间： | 1990-08-25 |
| 修稿时间： | 1990-08-25 |
STRENGTH AT ELEVATED TEMPERATURE OF HOT-WORKING TOOL STEELS OF 5Cr TYPE AND 3Cr-3Mo TYPE |
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| SUN Peizhen,ZHAO Jiansheng,XIE Changsheng.STRENGTH AT ELEVATED TEMPERATURE OF HOT-WORKING TOOL STEELS OF 5Cr TYPE AND 3Cr-3Mo TYPE[J].Chinese Journal of Materials Research,1990,4(4):303-308. |
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| Authors: | SUN Peizhen ZHAO Jiansheng XIE Changsheng |
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| Affiliation: | Huazhong University of Science and Technology |
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| Abstract: | The strength at elevated temperature is one of the most important proper-ties of hot-working tool steel.The changes of the strength with temperature are obviouslydivided into two stages.This phenomenon is described by a phenomenlogical theory.Theresults s |
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| Keywords: | strength at elevated temperature hot-working tool steel softening |
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