金属学报  1977, Vol. 13 Issue (3): 187-249

论文 本期目录 | 过刊浏览 |

18Cr2Ni4WA钢过热和石状断口的观察

叶里

大冶钢厂钢铁研究所

AN INVESTIGATION OF ROCK-LIKE FRACTURE OF 18Cr2Ni4WA

Yeh Li Resarch Institute of Tayeh Steel Works

叶里. 18Cr2Ni4WA钢过热和石状断口的观察[J]. 金属学报, 1977, 13(3): 187-249.
. AN INVESTIGATION OF ROCK-LIKE FRACTURE OF 18Cr2Ni4WA[J]. Acta Metall Sin, 1977, 13(3): 187-249.

摘要 参考文献 相关文章 Metrics 全文: PDF(3728 KB)   摘要: 比较了三种不同冶炼工艺(平炉与电炉混合炼钢经RH真空循环脱气处理、碱性电炉冶炼及电炉冶炼加电渣重熔)和两种不同脱氧方法(并用铝、钛或仅用铝脱氧)生产的五炉18Cr2Ni4WA钢的过热敏感性并观察了断口.实验表明,这种钢产生严重过热井出现石状断口的条件是:(1)钢在高温加热时原始奥氏体晶粒充分长大;(2)钢中含有MnS夹杂物以细小的颗粒沉淀在原始奥氏体晶界上,并用铝、钛脱氧使钢中含有微量残留钛可以在高温加热过程中阻止奥氏体晶粒长大同时改善MnS夹杂物的形态和分布状况,从而有效地降低了这种钢的过热敏感性。最后,讨论了这种钢形成石状断口的机构。 Abstract：The steel (18Cr2Ni4WA) melted by three different processes and deoxidized eitherwith aluminium and titanium or with aluminium alone has been studied in order to clar-ify the cause of its rock-like fractography. It is believed that such rock-like fracture isconnected with the sensibility of over-heating of the steel. Conditions render this steelsensible to over-heating are: (1) the over-growth of austenite grains on heating at hightemperatures; (2) the precipitation of fine manganese sulphide inclusions at the austen-ite boundaries. It is considered that small amounts of residual titanium left over afterdeoxidation may retard the growth of austenite grains as well as modify the mode anddistribution of the fine manganese sulphide inclusions, thus reducing the sensibility toover-heating of the steel. 收稿日期: 1977-03-18      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 叶里 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1977/V13/I3/187 [1] 柯俊,北京钢铁工业学院学报,1(1955) ,68． [2] Ko, T. (柯俊) and Hanson, D., J. Iron Steel Inst. London, 164 (1950) , 51． [3] Preece, A. et al., J. Iron Steel Inst. London, 153 (1946) , 237． [4] Baker, T. J. and Johnson, R., J. Iron Steel Inst. London, 211 (1973) , 783． [5] Goodenow, R. H., ASM Trans. Quart., 59 (1966) . 804． [6] 木下修司,铁钢,59(1973) ,446． [7] Samuel,L.C.et al.,Aluminium in Iron and Steel,John Wiley,New York,1953． 中译本:钢铁中的铝,中国工业出版社,1965． [8] 沢村 宏,铁钢,43(1957) ,31 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed