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| 1 | 中碳Cr-Ni-Mo-V高强度钢的高温拉伸行为研究显示文摘利用MTS880试验机测试了40CrNi3MoV钢和50CrNi5MoV钢在高温下的拉伸性能。结果表明:试验钢的抗拉强度、屈服强度随试验温度的增加而降低,断面收缩率、伸长率随着试验温度的增加而增加。在350℃时,50CrNi5MoV钢与40CrNi3MoV钢的抗拉强度分别为1395、1180MPa;在500℃拉伸时,50CrNi5MoV钢与40CrNi3MoV钢的抗拉强度分别为1185、978MPa。与室温拉伸时的强度相比,350℃拉伸时50CrNi5MoV钢与40CrNi3MoV钢抗拉强度的下降率分别为14%和15%;500℃拉伸时50CrNi5MoV钢与40CrNi3MoV钢抗拉强度的下降率分别为27%和29%。50CrNi5MoV钢不但室温强度高,而且在500℃的高温下抗拉强度仍比40CrNi3MoV钢高200MPa左右,这说明50CrNi5MoV钢更适合在高温下使用。 | 王小龙 王毛球 孟彬 时捷 徐乐 | 2018 | 热加工工艺2018，47，16： | 3 |
| 2 | 新型炮钢回火碳化物析出规律及对高温力学性能影响显示文摘通过光学金相、扫描电镜及能谱和X射线分析研究了新型炮钢回火碳化物的析出规律,发现:当回火温度高于620℃时,除渗碳体外,还析出合金碳化物Mo2C,并在640℃达到峰值。此外,对新型炮钢高温性能及使用寿命进行了分析和讨论。 | 高海霞 王俊 黄进峰 郭峰 吴护林 贾代金 | 2007 | 热加工工艺2007，36，10： | 3 |
| 3 | Low cycle fatigue behavior of high strength gun steels显示文摘The low cycle fatigue (LCF) behavior of two high strength steels, with nominal chemical compositions (mass fraction, %)of 0.40C-1.5Cr-3Ni-0.4Mo-0.2V (PCrNi3MoV) and 0.25C-3Cr-3Mo-0.8Ni-0.1Nb (25Cr3Mo3NiNb), was investigated by using the smooth bar specimens subjected to strained-controlled push-pull loading. It is found that both steels show cyclic softening, but 25Cr3Mo3NiNb steel has a lower tendency to cyclic softening. 25Cr3Mo3NiNb steel has higher fatigue ductility, and its transition fatigue life is almost three times that of PCrNi3MoV. 25Cr3Mo3NiNb steel also shows higher LCF life either at a given total strain amplitude above 0.5% or at any given plastic strain amplitude, despite its lower monotonic tensile strength than that of PCrNi3MoV.It also means that 25Cr3Mo3NiNb steel can endure higher total strain amplitude and plastic strain amplitude at a given number of reversals to failure within 104. 25Cr3Mo3NiNb steel is expected to be a good gun steel with high LCF properties because only several thousand firings are required for gun barrel in most cases. | Maoqiu Wang Han Dong Qi Wang Changgang Fan Division of Structural Materials, Central Iron & Steel Research Institute, Beijing 100081, China | 2004 | Journal of University of Science and Technology Beijing2004，11，3： | 0 |
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