淬火温度对高硼铸钢显微组织和硬度的影响.pdf

第28卷增刊 材料热处理学报 V01．28 Supplement 2007年8燕 冁认NSACTIONSOFM瑚瞧黻ALSAND璀l^譬玎哩^n惜}睇 August 2007 淬火温度对高硼铸钢显微组织和硬度的影响 蒋志强1，符寒光2，杨军3，王晋华3 安710049；3．殖安建筑科技大学冶金工程学院，陕谣西安710055) 摘要：研究淬火温度对含碳量小予0．4％和含硼量小于2．00／0的高硼铸钢显微组织和硬度的影响。高硼铸钢铸态基体组织由珠 光体窝镶素体维残。淬火处理鑫，碾纯物数量变化不羁显，隧着淬火湿度舞裹，基髂显徽硬度辍试撵宏鼹疆度提高，淬火温度 硬度超过1500HV，由Fe2B和少量FeB组成。 关键词：褰硼镱镶；淳必瀣发；瓣纯携；硬度；鼹锾缍织 中阙分类号：粥1131TB333 Effectof onmicrostructureandhardness quenchingtemperature of boroncaststeel hil三h JIANG Jin-hua3 Jun3，Ⅵ後NG Zhi—qian91，FUHan-guan92，YANG ofIndustrial Institute (1．DepartmentEngineering，ZhengzhouofAeronautics，Zhengzhou450015，China； 2．School and ofMaterialsScience JiaotongUniversity,Xi’an710049，China； Engineering，Xi’an 3。School University 710055，China) ofMetallurgicalEngineering，Xi’all Abstract：Theeffects 011themierosmtetureandhardnessboroneaststeel smallerthan0。4 ofquenchingtemperature ofhigh containing wt．％Candsmallerthan2．0 were as-fastmatrix boroncaststeelconsistsofthe andferrite。The wt+％B investigated．Theofhigh pearlite borides011thematrixhave110obvious at900—1100C．Themicro-hardnessofmatrixand hardness change macroscopical quenching with increasetheincrease the excels100伊℃．thehardnesshasa decrease． temperature．When slight ofquenching quenchin