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.988 北京科技大学学报 第29卷 建设与管理，2000,20(4)：65 3结论 [2]靳光法.新型双金属材料问世.机械工程师，2002(12)：2 [3]陈亚莉。未来航空发动机涡轮叶片用材的最新形式一微叠 (1)当轧制温度在900~1000℃时，有利于 层复合材料.航空工程与维修，2001(5)：10 25Cr5MoAQ235钢的复合；道次压下量对 [4]张全成，何贵玉，吴建生，等.TiNb/Ti一18A一2C一2Nb复合材 25Cr5MoA和Q235钢复合板界面结合强度影响非 料的力学性能和断裂特征.稀有金属材料科学与工程，2001， 常大，道次压下量大，有利于形成更多的洁净、活化 30(5):373 的新生表面，并且可以细化晶粒，提高复合板的结合 [5]Tsuji N,Toyoda T.Minamino Y,et al.Microstructural change 强度， of ultrafine grained aluminum during high speed plastic deforma tion.Mater Sci Eng A.2003.350:108 (2)在热轧过程中，由于合金元素的扩散，会使 [6]张继良.钛/钢复合板热轧工艺及机理研究[学位论文]，沈 金属组织中的晶粒呈现出梯度变化，有利于提高双 阳：东北工学院，1989 金属复合材料的结合强度， [7]崔忠圻，刘北兴.金属学与热处理原理.哈尔滨：哈尔滨工业 大学出版社，1998 参考文献 [8]宋维锡，金属学.修订本.北京：冶金工业出版社，1989 [1】李志强，胡柯·金属复合材料在永定新河进洪闸的运用。水力 Bonding behavior of 25Cr5MoA/Q235 hot rolled clad plates CHEN Jing),TONG Jianguo,REN Xueping) 1)Materials Science and Engineering School.University of Science and Technology Beijing.Beijing 100083.China 2)Journal Publishing Center.University of Science and Technology Beijing.Beijing 100083.China ABSTRACT 25Cr5MoA/Q235 steel clad plates were prepared with the composite slabs heated to the tempera- ture between 800C and 1100C,held at each temperature for 30min,rolled one pass and reduced from 50%to 70%.Their bonding shear strengths were tested by the electron universal testing machine CMT4105 and the metallographic microstructures of their interfaces were observed by optical microscope and SEM.The results show that the rolling temperature between 900C and 1000C is favorable to the bonding of the steels and pass reduction is crucial to the bonding strength.When the pass reduction becomes large,cleaner and more activated new interfaces will be obtained and the grains will be refined,as a result the bonding strength can be enhanced. The gradient metallographic changes of grains can also raise the bonding strength of the clad plates. KEY WORDS bimetal composite:Q235 steel;25Cr5MoA steel:bonding properties;rolling:pass reduction3 结论 （1） 当轧制温度在900～1000℃时有利于 25Cr5MoA／Q235 钢 的 复 合；道 次 压 下 量 对 25Cr5MoA 和 Q235钢复合板界面结合强度影响非 常大道次压下量大有利于形成更多的洁净、活化 的新生表面并且可以细化晶粒提高复合板的结合 强度． （2） 在热轧过程中由于合金元素的扩散会使 金属组织中的晶粒呈现出梯度变化有利于提高双 金属复合材料的结合强度． 参 考 文 献 ［1］ 李志强胡柯．金属复合材料在永定新河进洪闸的运用．水力 建设与管理200020（4）：65 ［2］ 靳光法．新型双金属材料问世．机械工程师2002（12）：2 ［3］ 陈亚莉．未来航空发动机涡轮叶片用材的最新形式———微叠 层复合材料．航空工程与维修2001（5）：10 ［4］ 张全成何贵玉吴建生等．TiNb／Ti—48Al—2Cr—2Nb 复合材 料的力学性能和断裂特征．稀有金属材料科学与工程2001 30（5）：373 ［5］ Tsuji NToyoda TMinamino Yet al．Microstructural change of ultrafine-grained aluminum during high-speed plastic deformation．Mater Sci Eng A2003350：108 ［6］ 张继良．钛／钢复合板热轧工艺及机理研究 ［学位论文 ］．沈 阳：东北工学院1989 ［7］ 崔忠圻刘北兴．金属学与热处理原理．哈尔滨：哈尔滨工业 大学出版社1998 ［8］ 宋维锡．金属学．修订本．北京：冶金工业出版社1989 Bonding behavior of 25Cr5MoA／Q235hot rolled clad plates CHEN Jing 1）TONG Jianguo 12）REN Xueping 1） 1） Materials Science and Engineering SchoolUniversity of Science and Technology BeijingBeijing100083China 2） Journal Publishing CenterUniversity of Science and Technology BeijingBeijing100083China ABSTRACT 25Cr5MoA／Q235steel clad plates were prepared with the composite slabs heated to the temperature between800℃ and1100℃held at each temperature for30minrolled one pass and reduced from50％ to 70％．Their bonding shear strengths were tested by the electron universal testing machine CMT4105and the metallographic microstructures of their interfaces were observed by optical microscope and SEM．The results show that the rolling temperature between900℃ and1000℃ is favorable to the bonding of the steels and pass reduction is crucial to the bonding strength．When the pass reduction becomes largecleaner and more activated new interfaces will be obtained and the grains will be refinedas a result the bonding strength can be enhanced． The gradient metallographic changes of grains can also raise the bonding strength of the clad plates． KEY WORDS bimetal composite；Q235steel；25Cr5MoA steel；bonding properties；rolling；pass reduction ·988· 北 京 科 技 大 学 学 报 第29卷