金属学报  1956, Vol. 1 Issue (3): 279-303

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碳素工具钢中渗碳体石墨化的研究

何忠治;孙文川;柯俊

钢铁工业综合研究所;北京钢铁工业学院;北京钢铁工业学院

ON THE GRAPHITIZATION OF HIGH CARBON TOOL STEELS

HO ZHUNG-ZHE Research Institute of Iron and Steel Industry;Peking;SUN WEN-CHUAN Peking Institute of Ferrous Metallurgy;KO TSUN(T.KO)Peking Institute of Ferrous Metallurgy

何忠治;孙文川;柯俊. 碳素工具钢中渗碳体石墨化的研究[J]. 金属学报, 1956, 1(3): 279-303.
, , . ON THE GRAPHITIZATION OF HIGH CARBON TOOL STEELS[J]. Acta Metall Sin, 1956, 1(3): 279-303.

摘要 参考文献 相关文章 Metrics 全文: PDF(3825 KB)   摘要: 在热加工过程中,加热及加工温度对1.1—1.2%碳钢在加热或加工后空冷再进行球化退火时,渗碳体分解为石墨的作用有重要的影响。在奥氏体状态870℃以上,停止加工的温度愈高,以后石墨的析出作用也愈严重。高温加工后缓冷或在低温加工可以减轻石墨化的作用。 Abstract：The effect of hot working on the graphite formation in 1.1—1.2% carbon toolsteels during subsequent annealing was investigated.Specimens were heated in air to1050℃ for 10 minutes,cooled in a second furnace to the forging temperature,forged rapidly to give reductions in height between 0—40%,air-cooled,and annealed for16 hours at 700℃.Graphite was determined by chemical analysis.It was foundthat:1.Austenitizing in air between 870°and 1050℃ followed by air cooling causedthe formation of graphite during subsequent annealing.The amount of graphiteincreased with increasing austenitizing temperature.Precipitation of graphite occurredalong the austenite grain boundary.2.Hot working at various temperatures increased the tendency of graphitizationduring subsequent annealing.The amount of graphite formed was smallest whenthe specimens were forged at 870℃ and increased with increasing or decreasingtemperature.3.Slow cooling after the specimens had been heated to or hot worked at hightemperatures reduced the degree of graphitization,provided that free cementite wasabsent during hot working.4.Forging during continuous cooling removed the effect of previous heatingor hot working until the temperature was sufficiently low to produce free cementiteduring forging.Forging during cooling gave minimum amount of graphite whenthe forging was interrupted between 820°and 870℃.A possible explanation to account for the phenomena is suggested. 收稿日期: 1956-03-18      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 何忠治 孙文川 柯俊 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1956/V1/I3/279 [1] Case,S.L.& Van Horn,K.R.,Aluminum in Iron and Steel.Wiley,New York,1953． [2] #12 [3] Dennis,W.E.,J.Iron Steel Inst.,171(1952) ,59． [4] Harry,E.D.,J.Iron Steel Inst.,178(1954) ,109． [5] Hickley,R.H.& Quarrell,A.G.,J.Iron Steel Inst.,178(1954) ,337． [6] #12 [7] Dulis,E.J.& Smith,G.V.,Trans.Amer.Soc.Metals,46(1954) ,1318． [8] Smith,G.V.,MacMillan,& Dulis,E.J.,Trans.Amer.Soc.Metals,43(1951) ,692． [9] #12 [10] #12 [11] Andrew,J.H.and李薰,J.Iron Steel Inst.,165(1950) ,145． [12] Darken,L.S.,Smith,R.P.and Filer,E.W.,Trans.Amer.Inst.Min.Met.Eng.,191(1951) ,1174． [13] Dawson,J.V.,Smith,L.W.L.& Bach,B.B.,J.Res.Brit.Cast Iron Res.Assn.,4(1953) ,540． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed