Fe-17Mn-8Cr合金在多向锻造过程中显微组织与性能的变化
Microstructure and Property Changes of Fe-17Mn-8Cr Alloy during Multi-directional Forging Process
摘 要
采用拉伸试验机和动态机械热分析仪等仪器测试了Fe-17Mn-8Cr合金在多向锻造过程中显微组织、力学性能和阻尼性能等的变化。结果表明：随着多向锻造过程的进行，ε马氏体和γ奥氏体片明显细化，分布更加均匀；合金中的位错密度急剧增大，屈服强度显著提高；多向锻造态合金的阻尼对数衰减率有所下降，但仍具有较高的阻尼性能，其阻尼机制主要是ε马氏体变体交叉程度对γ/ε界面移动以及高密度位错对层错运动的相互作用。
多向锻造
力学性能
阻尼性能
显微组织
Fe-17Mn-8Cr alloy
multi-directional forging
mechanical property
damping capacity
microstructure
Abstract
The changes of microstructure, mechanical and damping properties of Fe-17Mn-8Cr alloy during multi-directional forging process were investigated by tensile testing and dynamic thermal mechanical analyzer. The results show that during multi-directional forging process the ε-martensite and γ-austenite plates were greatly refined and more uniformly distributed. Meanwhile, a high density of dislocations was introduced and yield strength was improved obviously. The logarithmic decrement of Fe-17Mn-8Cr alloy after multi-directional forging declined but the alloy still had a high damping capacity. The damping mechanism of this alloy was interaction between the effect of variant crossing degree of ε-martensite on γ/ε interface movement and the effect of high density of dislocations on stacking fault movement.
中图分类号 TG135.7 DOI 10.11973/jxgccl201707004
所属栏目 试验研究
基金项目
收稿日期 2016/1/27
修改稿日期 2017/3/23
网络出版日期
作者单位点击查看
备注冉敏(1989-),男,四川南充人,硕士研究生
引用该论文: RAN Min,YAN Hongge,CHENG Xiangfei,CHEN Jihua,SU Bin,XIA Weijun,ZHANG Ming. Microstructure and Property Changes of Fe-17Mn-8Cr Alloy during Multi-directional Forging Process[J]. Materials for mechancial engineering, 2017, 41(7): 18～23
冉敏,严红革,程相飞,陈吉华,苏斌,夏伟军,张明. Fe-17Mn-8Cr合金在多向锻造过程中显微组织与性能的变化[J]. 机械工程材料, 2017, 41(7): 18～23
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【5】黎为, 李宁, 腾劲, 等. 时效温度对Fe-19Mn合金阻尼性能的影响[J]. 金属热处理, 2010, 35(12):67-70.
【6】于学勇, 李宁, 胥永刚, 等. 固溶处理温度对Fe-14Mn-0.22 C减振合金阻尼性能的影响[J]. 四川大学学报(工程科学版), 2003, 35(5):84-87.
【7】黄姝珂, 刘建辉, 李昌安, 等. 预变形对Fe-Mn合金层错几率和阻尼性能的影响[J]. 金属学报, 2009, 45(8):937-942.
【8】SONG C, XIA W, ZHANG J, et al. Microstructure and mechanical properties of Fe-Mn based alloys after sub-rapid solidification[J]. Materials and Design, 2013, 51(5):262-267.
【9】于学勇. Fe-Mn系高阻尼合金阻尼性能的研究[D]. 成都:四川大学, 2004.
【10】郭强,严红革, 陈振华, 等. 多向锻造技术研究进展[J]. 材料导报, 2007, 21(2):106-108.
【11】屈啸, 许晓嫦, 陈振湘, 等. 多向压缩变形对时效态铝铜合金组织和硬度的影响[J]. 机械工程材料, 2011, 35(3):64-75.
【12】JUN J H, KONG D K, CHOI C S. The influence of Co on damping capacity of Fe-Mn-Co alloys[J]. Materials Research Bulletin, 1998, 33(10):1419-1425.
【13】KIM G-H, NISHIMURA Y, WATANABE Y, et al. Effects of ε-martensite and dislocations behavior by thermo-mechanical treatment on Fe-Cr-Mn damping alloy[J]. Materials Science and Engineering A, 2009, 521:368-371.
【14】LÜCKE K. Thermally assisted unpinning of a dislocation double loop[J]. Journal of Applied Physics, 1968, 39(11):5181-5191.
【15】田铁, 毛星子, 米林. 镁及镁合金阻尼机理的研究现状[J]. 机械工程材料, 2011, 35(6):1-3.
【16】OKADA H, SAHASHI H, KIM I-S, et al. Effect of epsilon martensite on the damping of high strength Fe-Cr-Mn alloys[J]. Materials Science and Engineering A, 2004, 370(1/2):519-523.
【17】WEN Y, XIAO H, PENG H, et al. Relationship between damping capacity and variations of vacancies concentration and segregation of carbon atom in an Fe-Mn alloy[J]. Metallurgical and Materials Transactions A, 2015, 46(11):4828-4833.
【18】LEE Y K, BAIK S H, KIM J C, et al. Effects of amount of ε martensite, carbon content and cold working on damping capacity of an Fe-17% Mn martensitic alloy[J]. Journal of Alloys and Compounds, 2003, 355(1/2):10-16.
【19】BLIZNUK V V, GLAVATSKA N I, SÖDERBERG O, et al. Effect of nitrogen on damping, mechanical and corrosive properties of Fe-Mn alloys[J]. Materials Science and Engineering A, 2002, 338(1):213-218.
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