The alteration of the strength, hardness and impact ductility of 5CrNiMo steel using three different additions of RE La element is studied in this paper. The mechanical properties of 5CrNiMo steel with RE La additions...The alteration of the strength, hardness and impact ductility of 5CrNiMo steel using three different additions of RE La element is studied in this paper. The mechanical properties of 5CrNiMo steel with RE La additions are be compared with that of the 5CrNiMo steel on the same heat-treatment condition without RE La element addition. The results show that the strength, hardness and impact ductility of 5CrNiMo steel will be improved obviously when the content of RE La element is proper, and as the content of RE La element is 0.033%(mass fraction), the 5CrNiMo steel has the best mechanical properties.展开更多
采用不同的钒锶添加量及钒添加方式,制备了5Cr Ni Mo-V-Sr热作模具钢试样,并进行了热疲劳性能的测试与分析。结果表明:钒锶添加量及钒添加方式均对试样热疲劳性能产生影响;与不添加钒锶相比,添加0.5%V-0.5%Sr试样的热疲劳裂纹级别由7级...采用不同的钒锶添加量及钒添加方式,制备了5Cr Ni Mo-V-Sr热作模具钢试样,并进行了热疲劳性能的测试与分析。结果表明:钒锶添加量及钒添加方式均对试样热疲劳性能产生影响;与不添加钒锶相比,添加0.5%V-0.5%Sr试样的热疲劳裂纹级别由7级变为2级,热疲劳性能得到明显改善;与Fe V40合金添加方式相比,以纯金属钒添加方式制备的试样热疲劳裂纹级别由3级变为2级,热疲劳性能得到提高。5Cr Ni Mo热作模具钢的钒和锶添加量均应优选为0.5%,钒的添加优选为纯金属钒添加方式。展开更多
文摘The alteration of the strength, hardness and impact ductility of 5CrNiMo steel using three different additions of RE La element is studied in this paper. The mechanical properties of 5CrNiMo steel with RE La additions are be compared with that of the 5CrNiMo steel on the same heat-treatment condition without RE La element addition. The results show that the strength, hardness and impact ductility of 5CrNiMo steel will be improved obviously when the content of RE La element is proper, and as the content of RE La element is 0.033%(mass fraction), the 5CrNiMo steel has the best mechanical properties.
文摘采用不同的钒锶添加量及钒添加方式,制备了5Cr Ni Mo-V-Sr热作模具钢试样,并进行了热疲劳性能的测试与分析。结果表明:钒锶添加量及钒添加方式均对试样热疲劳性能产生影响;与不添加钒锶相比,添加0.5%V-0.5%Sr试样的热疲劳裂纹级别由7级变为2级,热疲劳性能得到明显改善;与Fe V40合金添加方式相比,以纯金属钒添加方式制备的试样热疲劳裂纹级别由3级变为2级,热疲劳性能得到提高。5Cr Ni Mo热作模具钢的钒和锶添加量均应优选为0.5%,钒的添加优选为纯金属钒添加方式。