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High strength and low alloy air-cooling bainitic cast steel
Author(s): Kuang Jia-cai, Fu Han-guang, Wang Lin-tao
Pages: 841-
845
Year: 2006
Issue:
6
Journal: JOURNAL OF JILIN UNIVERSITY(ENGINEERING AND TECHNOLOGY EDITION)
Keyword: 金属材料; 低合金钢; 贝氏体; 空冷; 高强度; 耐磨性;
Abstract: 采用正交实验方法,以硅、锰为主要合金元素,加入少量铬和硼,并用适量钛和稀土进行复合变质处理,在空冷淬火条件下,获得了强度超过2000MPa,硬度超过55 HRC,冲击韧性大于30J/cm2和断裂韧性大于70 MPa·m1/2的贝氏体铸钢,在销盘磨损和冲击磨损条件下,都具有优良的耐磨性.空冷贝氏体铸钢生产工艺简单,成本低廉,可用于制造颚板和锤头等产品,使用寿命比高锰钢高1-6倍.
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