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Jianjun Zhang Yimin Gao Jiandong Xing Xiaowei Wei Shengqiang Ma Baohua Che 《摩擦学汇刊》2013,56(3):461-468
The effect of hot forging on the microstructure and abrasion resistance of Fe-B alloy was studied. The results showed that boride networks are broken down by hot forging. After hot forging, the hardness of Fe-B alloy increased marginally, and the toughness increased considerably. In the two-body abrasion test, unforged Fe-B alloy exhibited excellent wear resistance and soft abrasive tended to show higher wear resistance. When alloys were tested against very hard abrasives, the wear resistance of forged Fe-B alloy was similar to that of unforged Fe-B alloy, but in the case of soft abrasives the wear resistance of forged Fe-B alloy was lower than that of unforged Fe-B alloy. 相似文献
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应用粉末烧结方法在45钢表面制得WC-Fe/Ni/Co硬质合金覆层,并进行了组织结构分析及显微硬度测试。结果表明:在1280~1300℃,得到的覆层与基体间通过元素的扩散渗透,产生牢固结合。覆层的组织致密、细小、分布均匀,具有较高的硬度。 相似文献
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利用粉末冶金技术,原位烧结合成了(Ti,V)C钢结硬质合金,并用扫描电镜、X射线衍射仪等研究了热处理对原位烧结(Ti,V)C钢结硬质合金组织和耐磨性的影响。结果表明:烧结态(Ti,V)C钢结硬质合金基体组织为细珠光体组织;1 000℃淬火后的组织转变为片状马氏体+(Ti,V)C硬质相颗粒+少量未溶碳化物;回火过程中合金具有较高的抗回火稳定性,在500℃左右回火时存在二次硬化现象;该合金在1 000℃淬火、经250,500℃回火后具有较好的耐磨性。 相似文献
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讨论了硬质合金镶套冷拔拉模的优势和缺陷 ,分析了采用Cr12MoV钢固体渗硼工艺和采用 45钢复合热处理工艺制作冷拔拉模的工艺路线并对二者进行了比较。试验结果证明 ,用加工性能好、价格低廉的 45钢经复合热处理后制作的冷拔拉模其内孔具有很高的硬度和耐磨性 ,完全可以代替硬质合金冷拔模具 相似文献
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