退火温度对无铝超高碳钢组织及性能的影响
Effects of Annealing Temperature on Microstructure and Property of Aluminum-Free Ultrahigh Carbon Steel
摘 要
对名义成分为Fe-1.58C-1.97Cr-0.26Si-0.73Mn-0.09Mo的一种无铝超高碳钢在800～1 100℃进行了退火处理，利用物相分析、显微组织观察、力学性能测试等方法研究了退火温度对该钢显微组织和力学性能的影响。结果表明：退火温度为800℃时，试验钢组织中存在大量的网状碳化物；当退火温度升至860℃时，网状碳化物消失，获得由细小均匀分布的碳化物加珠光体组成的组织；当退火温度进一步升至1 000℃以上时，试验钢中的珠光体组织变得粗大，且再次析出了网状碳化物；随退火温度的升高，试验钢的抗拉强度和冲击功先增大后减小，且均在860℃时达到最大，分别为1 017 MPa和15 J。
退火温度
碳化物
力学性能
aluminum-free ultrahigh carbon steel
annealing temperature
carbide
mechanical property
Abstract
The annealing treatments at 800-1 100℃ were conducted on an aluminum-free ultrahigh carbon steel with nominal composition of Fe-1.58C-1.97Cr-0.26Si-0.73Mn-0.09Mo, and then the effects of the annealing temperature on the microstructure and mechanical properties of the steel were studied by the methods such as phase analysis, microstructural observation, mechanical property tests. The results show that at the annealing temperature of 800℃, a large number of net-like carbides existed in the microstructure of the tested steel. When the annealing temperature increased to 860℃, the net-like carbides disappeared and the microstructure of fine and evenly distributed cabides and pearlite was obtained. When the annealing temperature increased further to 1 100℃, the pearlite became coarse and net-like carbides precipitated again in the tested steel. With the increase of annealing temperature, the tensile strength and impact energy of the tested steel first increased then decreased and both reached the peak values at 860℃, which were 1 017 MPa and 15 J, respectively.
中图分类号 TG156.1 DOI 10.11973/jxgccl201710018
所属栏目 材料性能及应用
基金项目 天津市科技特派员计划项目（15JCTPJC64600）；济宁市2013年度产学研合作项目
收稿日期 2016/8/7
修改稿日期 2017/6/22
网络出版日期
作者单位点击查看
备注薛贯鲁(1981-),男,山东济宁人,讲师,硕士
引用该论文: XUE Guanlu,QU Jiamin,WANG Zhimin,LIU Qingsuo. Effects of Annealing Temperature on Microstructure and Property of Aluminum-Free Ultrahigh Carbon Steel[J]. Materials for mechancial engineering, 2017, 41(10): 82～85
薛贯鲁,曲家民,王志敏,刘庆锁. 退火温度对无铝超高碳钢组织及性能的影响[J]. 机械工程材料, 2017, 41(10): 82～85
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【7】权国政,石彧,赵磊,等. 42CrMo钢热塑性变形诱导动态再结晶行为的动力学描述[J]. 材料热处理学报,2012,33(10):155-161.
【8】王良塑,贾书君,刘清友,等. 热压缩变形参数对海底用X70管线钢再结晶行为的影响[J]. 机械工程材料,2016,40(3):102-106.
【9】彭文飞,张建华,余文静,等. 高铁螺纹道钉钢TD16高温塑性变形行为研究[J]. 材料热处理学报,2015,36(8):243-248.
【10】蔺永诚,陈明松,钟掘. 42CrMo钢的热压缩流变应力行为[J]. 中南大学学报(自然科学版),2008,39(8):549-553.
【11】张新明,彭卓凯,邓运来, 等. Mg-9Gd-4Y-0.6Mn合金在293~723 K时的变形行为及显微组织演变[J]. 中南大学学报(自然科学版), 2006, 37(2):223-228.
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