Microstructure and Properties of Selective Laser Melting Formed CoCrFeNiCuAl0.8 High Entropy Alloy
摘 要
采用选区激光熔化成形(SLM)技术制备CoCrFeNiCuAl0.8高熵合金,研究了不同激光热输入(0.06~0.36 J·mm-1)下合金的成形质量和密度,确定最优成形工艺参数,并分析了在最优成形工艺参数下合金的显微组织和拉伸性能。结果表明:随着热输入的增加,SLM成形合金的密度先增大,当热输入大于0.15 J·mm-1时,密度基本保持不变;当热输入为0.34 J·mm-1时,密度最大,为7.5 g·cm-3,最优工艺参数为激光功率270 W、扫描速度800 mm·s-1。SLM成形合金具有由无序体心立方相(A2相)和有序体心立方相(B2相)组成的双相结构,显微组织由柱状晶和等轴晶组成,屈服强度、抗拉强度、断后伸长率、断面收缩率分别为651 MPa,840 MPa,22%,23%,断裂机制为韧性断裂。
Abstract
CoCrFeNiCuAl0.8 high entropy alloy was prepared by selective laser melting(SLM).The forming quality and density of the alloy at different laser heat inputs (0.06-0.36 J·mm-1) were studied, and the optimal forming process parameters were determined. The microstructure and tensile properties of the alloy under the optimal forming process parameters were analyzed. The results show that the density of SLM formed alloy increased first with the increase of heat input, and basically remained unchanged when the heat input was larger than 0.15 J·mm-1. When the heat input was 0.34 J·mm-1, the alloy had the maximum density of 7.5 g·cm-3, and the optimal process parameters were as follows: laser power of 270 W and scanning speed of 800 mm·s-1. The SLM formed alloy had a dual-phase structure consisted of disordered body-centered cubic phase (A2 phase) and ordered body-centered cubic phase (B2 phase), and the microstructure was composed of columnar and equiaxed grains. The yield strength, tensile strength, percentage elongation after fracture and percentage reduction of area of the alloy were 651 MPa, 840 MPa, 22% and 23%, respectively.The fracture mechanism was ductile fracture.
中图分类号 TG139 DOI 10.11973/jxgccl202307008
所属栏目 新材料 新工艺
基金项目 上海市青年科技启明星计划资助项目(22QB1401300);上海市技术性贸易措施应对专项项目(2021TBT004)
收稿日期 2023/3/24
修改稿日期 2023/5/27
网络出版日期
作者单位点击查看
联系人作者吴文恒
备注杨启云(1988-),男,山西大同人,工程师,硕士
引用该论文: YANG Qiyun,TAO Jie,WU Wenheng. Microstructure and Properties of Selective Laser Melting Formed CoCrFeNiCuAl0.8 High Entropy Alloy[J]. Materials for mechancial engineering, 2023, 47(7): 50~54
杨启云,陶杰,吴文恒. 选区激光熔化成形CoCrFeNiCuAl0.8高熵合金的组织与性能[J]. 机械工程材料, 2023, 47(7): 50~54
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】贾宇浩,王志军,吴庆峰,等.高熵合金高温性能研究进展[J].铸造技术,2022,43(11):935-947. JIA Y H,WANG Z J,WU Q F,et al.Research progress on high temperature properties of high-entropy alloys[J].Foundry Technology,2022,43(11):935-947.
【2】刘同华,强文江,王伟.不锈钢中合金元素的作用及其研究现状[J].热加工工艺,2018,47(4):17-21. LIU T H,QIANG W J,WANG W.Function and research status of alloying elements in stainless steel[J].Hot Working Technology,2018,47(4):17-21.
【3】YE Y F,WANG Q,LU J,et al.High-entropy alloy:Challenges and prospects[J].Materials Today,2016,19(6):349-362.
【4】MIRACLE D B,SENKOV O N.A critical review of high entropy alloys and related concepts[J].Acta Materialia,2017,122:448-511.
【5】BRIF Y,THOMAS M,TODD I.The use of high-entropy alloys in additive manufacturing[J].Scripta Materialia,2015,99:93-96.
【6】虞一凡,田君,刘涛,等.CoCrFeNiW<i>x高熵合金黏结剂对WC硬质合金显微组织和力学性能的影响[J].机械工程材料,2023,47(2):14-20. YU Y F,TIAN J,LIU T,et al. Effect of CoCrFeNiW<i>x high entropy alloy binder on microstructure and mechanical properties of WC cemented carbide[J].Materials for Mechanical Engineering,2023,47(2):14-20.
【7】王先珍,王一涵,俞嘉彬,等.高熵合金性能特点与应用展望[J].精密成形工程,2022,14(11):73-80. WANG X Z,WANG Y H,YU J B,et al.A brief review about perspective and properties of high-entropy alloys[J].Journal of Netshape Forming Engineering,2022,14(11):73-80.
【8】LU Z P,WANG H,CHEN M W,et al.An assessment on the future development of high-entropy alloys:Summary from a recent workshop[J].Intermetallics,2015,66:67-76.
【9】林惠娴,王凯,丁东红,等.高熵合金激光选区熔化研究进展[J].钢铁研究学报,2020,32(6):437-451. LIN H X,WANG K,DING D H,et al.Research progress on high entropy alloys by selective laser melting[J].Journal of Iron and Steel Research,2020,32(6):437-451.
【10】耿冬妮,陈晋市,师海月.激光增材制造技术制备高熵合金研究进展[J].粉末冶金技术,2022,40(3):195-203. GENG D N,CHEN J S,SHI H Y.Research progress on high-entropy alloys prepared by laser additive manufacturing[J].Powder Metallurgy Technology,2022,40(3):195-203.
【11】刘丘林,刘允中,王艳群.高熵合金的研究现状和应用前景[J].粉末冶金工业,2017,27(6):64-69. LIU Q L,LIU Y Z,WANG Y Q.Research status and application prospect of high-entropy alloy[J].Powder Metallurgy Industry,2017,27(6):64-69.
【12】李伟华,刘彬,付遨,等.扫描间距对选区激光熔化成形CoCrFeNiMo0.2高熵合金微观结构及性能的影响[J].中南大学学报(自然科学版),2023,54(1):24-35. LI W H,LIU B,FU A,et al.Effect of hatch spacing on microstructure and properties of CoCrFeNiMo0.2 high entropy alloy by selective laser melting[J].Journal of Central South University (Science and Technology),2023,54(1):24-35.
【13】侯庆玲,葛亚琼,畅泽欣,等.选区激光熔化CoCrFeNi-X高熵合金的研究进展[J].粉末冶金工业,2023,33(1):115-119. HOU Q L,GE Y Q,CHANG Z X,et al.Review on preparation of CoCrFeNi-X high entropy alloy by selective laser melting[J].Powder Metallurgy Industry,2023,33(1):115-119.
【14】魏水淼,马盼,张志宇,等.选区激光熔化制备AlCoCrFeNi高熵合金的成形性能[J].金属热处理,2022,47(12):28-35. WEI S M,MA P,ZHANG Z Y,et al.Processability of AlCoCrFeNi high entropy alloy fabricated by selective laser melting[J].Heat Treatment of Metals,2022,47(12):28-35.
【15】吴文恒,张亮,卢林.选区激光熔化成形Al系高熵合金的研究进展[J].粉末冶金工业,2021,31(4):1-10. WU W H,ZHANG L,LU L.Research progress of Al series high-entropy alloy prepared by selective laser melting[J].Powder Metallurgy Industry,2021,31(4):1-10.
【16】LUO S,SU Y,WANG Z. Tailored microstructures and strengthening mechanisms in an additively manufactured dual-phase high-entropy alloy via selective laser melting[J].Science China Materials,2020,67(7):1279-1290.
【17】KARLSSON D,MARAHAL A,JOHANSSON F,et al. Elemental segregation in an AlCoCrFeNi high entropy alloy:A comparison between selective laser melting and induction melting[J].Journal of Alloys and Compounds,2019,784:195-203.
【18】NIU P D,LI R D,YUAN T C,et al.Microstructures and properties of an equimolar AlCoCrFeNi high entropy alloy printed by selective laser melting[J].Intermetallics,2019,104:24.
【19】SNELL R,TAMMAS-WILLIAMS S,CHECHIK L,et al. Methods for rapid pore classification in metal additive manufacturing[J].JOM,2020,72(1):101-109.
【20】ZHOU P F,XIAO D H,WU Z,et al.Al0.5FeCoCrNi high entropy alloy prepared by selective laser melting with gas atomized pre-alloy powders[J].Materials Science and Engineering:A,2019,739:86-89.
【2】刘同华,强文江,王伟.不锈钢中合金元素的作用及其研究现状[J].热加工工艺,2018,47(4):17-21. LIU T H,QIANG W J,WANG W.Function and research status of alloying elements in stainless steel[J].Hot Working Technology,2018,47(4):17-21.
【3】YE Y F,WANG Q,LU J,et al.High-entropy alloy:Challenges and prospects[J].Materials Today,2016,19(6):349-362.
【4】MIRACLE D B,SENKOV O N.A critical review of high entropy alloys and related concepts[J].Acta Materialia,2017,122:448-511.
【5】BRIF Y,THOMAS M,TODD I.The use of high-entropy alloys in additive manufacturing[J].Scripta Materialia,2015,99:93-96.
【6】虞一凡,田君,刘涛,等.CoCrFeNiW<i>x高熵合金黏结剂对WC硬质合金显微组织和力学性能的影响[J].机械工程材料,2023,47(2):14-20. YU Y F,TIAN J,LIU T,et al. Effect of CoCrFeNiW<i>x high entropy alloy binder on microstructure and mechanical properties of WC cemented carbide[J].Materials for Mechanical Engineering,2023,47(2):14-20.
【7】王先珍,王一涵,俞嘉彬,等.高熵合金性能特点与应用展望[J].精密成形工程,2022,14(11):73-80. WANG X Z,WANG Y H,YU J B,et al.A brief review about perspective and properties of high-entropy alloys[J].Journal of Netshape Forming Engineering,2022,14(11):73-80.
【8】LU Z P,WANG H,CHEN M W,et al.An assessment on the future development of high-entropy alloys:Summary from a recent workshop[J].Intermetallics,2015,66:67-76.
【9】林惠娴,王凯,丁东红,等.高熵合金激光选区熔化研究进展[J].钢铁研究学报,2020,32(6):437-451. LIN H X,WANG K,DING D H,et al.Research progress on high entropy alloys by selective laser melting[J].Journal of Iron and Steel Research,2020,32(6):437-451.
【10】耿冬妮,陈晋市,师海月.激光增材制造技术制备高熵合金研究进展[J].粉末冶金技术,2022,40(3):195-203. GENG D N,CHEN J S,SHI H Y.Research progress on high-entropy alloys prepared by laser additive manufacturing[J].Powder Metallurgy Technology,2022,40(3):195-203.
【11】刘丘林,刘允中,王艳群.高熵合金的研究现状和应用前景[J].粉末冶金工业,2017,27(6):64-69. LIU Q L,LIU Y Z,WANG Y Q.Research status and application prospect of high-entropy alloy[J].Powder Metallurgy Industry,2017,27(6):64-69.
【12】李伟华,刘彬,付遨,等.扫描间距对选区激光熔化成形CoCrFeNiMo0.2高熵合金微观结构及性能的影响[J].中南大学学报(自然科学版),2023,54(1):24-35. LI W H,LIU B,FU A,et al.Effect of hatch spacing on microstructure and properties of CoCrFeNiMo0.2 high entropy alloy by selective laser melting[J].Journal of Central South University (Science and Technology),2023,54(1):24-35.
【13】侯庆玲,葛亚琼,畅泽欣,等.选区激光熔化CoCrFeNi-X高熵合金的研究进展[J].粉末冶金工业,2023,33(1):115-119. HOU Q L,GE Y Q,CHANG Z X,et al.Review on preparation of CoCrFeNi-X high entropy alloy by selective laser melting[J].Powder Metallurgy Industry,2023,33(1):115-119.
【14】魏水淼,马盼,张志宇,等.选区激光熔化制备AlCoCrFeNi高熵合金的成形性能[J].金属热处理,2022,47(12):28-35. WEI S M,MA P,ZHANG Z Y,et al.Processability of AlCoCrFeNi high entropy alloy fabricated by selective laser melting[J].Heat Treatment of Metals,2022,47(12):28-35.
【15】吴文恒,张亮,卢林.选区激光熔化成形Al系高熵合金的研究进展[J].粉末冶金工业,2021,31(4):1-10. WU W H,ZHANG L,LU L.Research progress of Al series high-entropy alloy prepared by selective laser melting[J].Powder Metallurgy Industry,2021,31(4):1-10.
【16】LUO S,SU Y,WANG Z. Tailored microstructures and strengthening mechanisms in an additively manufactured dual-phase high-entropy alloy via selective laser melting[J].Science China Materials,2020,67(7):1279-1290.
【17】KARLSSON D,MARAHAL A,JOHANSSON F,et al. Elemental segregation in an AlCoCrFeNi high entropy alloy:A comparison between selective laser melting and induction melting[J].Journal of Alloys and Compounds,2019,784:195-203.
【18】NIU P D,LI R D,YUAN T C,et al.Microstructures and properties of an equimolar AlCoCrFeNi high entropy alloy printed by selective laser melting[J].Intermetallics,2019,104:24.
【19】SNELL R,TAMMAS-WILLIAMS S,CHECHIK L,et al. Methods for rapid pore classification in metal additive manufacturing[J].JOM,2020,72(1):101-109.
【20】ZHOU P F,XIAO D H,WU Z,et al.Al0.5FeCoCrNi high entropy alloy prepared by selective laser melting with gas atomized pre-alloy powders[J].Materials Science and Engineering:A,2019,739:86-89.
相关信息