空气气氛条件下加热温度对45钢脱碳层深度的影响  

Effect of heating temperature on depth of decarburization layer of 45 steel in air atmosphere

作　　者：许成 杨玉 王润琦 佟欣儒 任俊威[3] Xu Cheng;Yang Yu;Wang Runqi;Tong Xinru;Ren Junwei(State Key Laboratory of Metal Materials and Application for Marine Equipment,Anshan Liaoning 114009,China;Iron and Steel Research Institute of Ansteel Group,Anshan Liaoning 114009,China;Bayuquan Branch of Angang Steel Co.,Ltd.,Yingkou Liaoning 115007,China)

机构地区：[1]海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114009 [2]鞍钢集团钢铁研究院,辽宁鞍山114009 [3]鞍钢股份有限公司鲅鱼圈钢铁分公司,辽宁营口115007

出　　处：《金属热处理》2024年第4期219-222,共4页Heat Treatment of Metals

摘　　要：研究了空气气氛条件下不同加热温度(700~1300℃,随炉升温,达温后保温1 h,出炉空冷)对45钢表面脱碳层深度的影响,并分析了其脱碳机理。结果表明,随着加热温度的升高,45钢表面总脱碳层深度增加。700℃加热时几乎不产生脱碳现象,750~800℃主要为完全脱碳组织,850~900℃为完全脱碳组织与部分脱碳组织共存,950℃及以上主要为部分脱碳组织。Effect of different heating temperatures(700⁃1300℃for 1 h,heating up along with the furnace and air cooling)under air atmosphere on decarburization depth of 45 steel surface was studied,and the mechanism of decarburization was analyzed.The results show that as the temperature increases,the depth of the decarburization layer on 45 steel surface is increased.When heated at 700℃,no decarburization occurs on the 45 steel surface.When heated at 750~800℃,it is mainly dominated by completely decarburized structure.When heated in the range of 850~900℃,there is a coexistence of completely decarburized structure and partially decarburized structure.When heated at 950℃and above,it is primarily composed of partially decarburized structure.

关 键 词：完全脱碳 部分脱碳 温度 

分 类 号：TG156.6[金属学及工艺—热处理]