金属学报  1987, Vol. 23 Issue (6): 575-580

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Cr系白口铸铁的磨损与断裂特性

方亮;饶启昌;周庆德

西安交通大学;西安交通大学;西安交通大学

ABRASIVE WEAR RESISTANCE OF Cr-FAMILY WHITE CAST IRONS

by FANG Liang; RAO Qichang; ZHOU Qingde (Department of Mechanical Engineering; Xi'an Jiaotong University) (Manuscript received 11 August; 1985; revised manuscript 26 April; 1986)

方亮;饶启昌;周庆德. Cr系白口铸铁的磨损与断裂特性[J]. 金属学报, 1987, 23(6): 575-580.
, , . ABRASIVE WEAR RESISTANCE OF Cr-FAMILY WHITE CAST IRONS[J]. Acta Metall Sin, 1987, 23(6): 575-580.

摘要 参考文献 相关文章 Metrics 全文: PDF(1203 KB)   摘要: 本文研究了含2,9,15,20和27％Cr白口铸铁的磨料磨损耐磨性和断裂韧性。这五种铸铁的共晶碳化物分数保持不变,在20—25％范围内。用热处理得到马氏体和奥氏体两种基体。结果表明,Cr/C增加时,碳化物从M_3C转变为M_7C_3,M_7C_3本身的硬度也随Cr/C而提高,碳化物的形貌由连续网状转变为杆状或板状。这些特征均对耐磨性和韧性有利。销-盘磨损试验和湿式橡胶轮试验结果指出,只有当碳化物能保护基体,上述这些有利的特征才能表现出来,Cr/C的提高能有效地提高耐磨性。 Abstract：Abrasive wear resistance and fracturetoughness of white cast irons containing 2, 9, 15, 20 and 27 wt-%Cr have been investigated. Different contents of Cr and C have been added to the irons to keep the eutectic carbide constant (20—25%). Martensitic and austenitic matrices have been obtained by means of heat treatment. The results show that M_3C will transform to M_7C_3 and the microhardness of M_7C_3 itself will increase while the Cr/C ratio in iron increases. Meanwhile, the morph01ogy of carbides changes from Continuous network to rod or plate-like. All these make the carbides protect the matrices effectively, and improve the abrasive wear resistance of materials in pin-disc and wet rubber wheel wear tests. Wear resistance and fracture toughness have been discussed combinedly, that gives a general guide for designing and choosing wear resistant materials. 收稿日期: 1987-06-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 方亮 饶启昌 周庆德 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1987/V23/I6/575 1 Watson J D, Mutton P J, Sarse I R. Met Forum, 1980; 3(1) : 74-88 2 Gundlach R. B. Wear, 1978; 46: 97-108 3 Borik F. Met Eng Q, 1972; 12(2) : 33-39 4 Zum Gahr K-H, Eldis G T. Wear, 1980; 64: 175-194 5 Zum Gahr K-H. Metall Trans, 1980; 114(4) : 613-620 6 Maratray F. Factors Affecting the Structure of Chromium and Chromium-Moly-bdenum White Irons, Paris: Climax Molybdenum S A, 1971 7 Richardson R C D. Wear, 1968; 11(4) : 245-275 8 Xing J T, Lu W H, Wang X T. Wear of Materials, Int Conf on Wear of Materials, New York: ASME, 1983: 45-6 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed