高温和应力作用下国产S30432钢中Z相的析出行为
Precipitation Behaviour of Z-phase in Domestic S30432 Steel at High-Temperature and Stress
摘 要
利用RD-2型高温持久试验机、高分辨透射电子显微镜和能谱仪研究了国产S30432耐热钢在供货态及不同温度、应力条件下持久断裂后的第二相,尤其是Z相的析出行为及影响因素.结果表明:供货态S30432钢中只存在MX相;在650 ℃、170 MPa、10 712 h持久条件下析出了M23C6碳化物和富铜相;在700 ℃、150 MPa、937 h条件下,不仅析出了M23C6碳化物和富铜相,还出现了Z相及包含MX相和Z相的颗粒;在700 ℃、150 MPa、1 944 h条件下Z相粗化缓慢,在700 ℃、100 MPa、11 832 h条件下Z相粗化明显;高温和应力均会加速Z相的析出.
Z相
显微组织
heat-resistant steel
Z-phase
microstructure
Abstract
Precipitation behaviour and effect factors of Z-phase in domestic S30432 steel in supply state and after creeping at different temperatures and stresses were investigated by RD-2 type creep testing,transmission electron microscopy and energy disperse spectroscopy.Results show that only MX phase was observed in S30432 steel in supply state.Cu-rich phase and M23C6 carbide precipitated under the conditions of 650 ℃,170 MPa and 10 712 h.Besides,Z-phase and hybrid MX/Z-phase particles were found under the conditions of 700 ℃,150 MPa and 937 h.Z-phase,whose size increased slowly under the conditions of 700 ℃,150 MPa and 1 944 h,coarsened obviously under the conditions of 700 ℃,100 MPa and 11 832 h.The precipitation of Z-phase could be accelerated by high-temperature and stress.
中图分类号 TG142.1
所属栏目 试验研究
基金项目 “十二五”国家科技支撑计划资助项目(2011BAK06B04);国家自然科学基金资助项目(51171097)
收稿日期 2013/12/31
修改稿日期 2014/12/14
网络出版日期
作者单位点击查看
备注唐波(1987-),男,四川资阳人,硕士研究生.
引用该论文: TANG Bo,ZHU Li-hui. Precipitation Behaviour of Z-phase in Domestic S30432 Steel at High-Temperature and Stress[J]. Materials for mechancial engineering, 2015, 39(5): 19～22
唐波,朱丽慧. 高温和应力作用下国产S30432钢中Z相的析出行为[J]. 机械工程材料, 2015, 39(5): 19～22
被引情况:
【1】李文胜,黄 翔,王 伟,胡 平,张春雷,高 岩, "Super304H奥氏体不锈钢高温下组织与性能演变的研究进展",机械工程材料 40, 1-5(2016)
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【3】ZHANG Y,ZHU L,QI A,et al.Microstructural evolution and the effect on mechanical properties of S30432 heat-resistant steel during aging at 650 ℃[J].ISIJ International,2010,50(4):596-600.
【4】JIANG J,ZHU L.Strengthening mechanisms of precipitates in S30432 heat-resistant steel during short-term aging[J].Materials Science and Engineering:A,2012,539:170-176.
【5】CHI C,YU H,DONG J,et al.The precipitation strengthening behavior of Cu-rich phase in Nb contained advanced Fe-Cr-Ni type austenitic heat resistant steel for USC power plant application[J].Progress in Natural Science:Materials International,2012,22(3):175-185.
【6】张忠文,李新梅,邹勇,等.650 ℃ 时效不同时间后 Super304H 钢的显微组织[J].机械工程材料,2011,35(11):5-15.
【7】张忠文,李新梅,杜宝帅,等.Super304H 钢 700 ℃ 时效后组织和韧性的变化[J].机械工程材料,2012,36(10):12-14.
【8】赵林,董显平,孙锋,等.Super304H 超超临界锅炉过热器管长期服役后的显微组织及力学性能[J].机械工程材料,2013,37(7):28-32.
【9】ZHU L H,ZHANG Y J,WANG Q J,et al.Microstructural evolution and change in hardness of S30432 heat-resistant steel during creep at 650 ℃[J].Steel Research International,2010,81(4):315-319.
【10】JACK D H,JACK K H.Structure of Z-phase[J].J Iron Steel Inst,1972,210(10):790-792.
【11】STRANG A,VODAREK V.Z phase formation in martensitic 12CrMoVNb steel[J].Materials Science and Technology,1996,12(7):552-556.
【12】DANIELSEN H K,HALD J.On the nucleation and dissolution process of Z-phase Cr (V,Nb) N in martensitic 12% Cr steels[J].Materials Science and Engineering:A,2009,505(1):169-177.
【13】SAWADA K,KUSHIMA H,KIMURA K.Z-phase formation during creep and aging in 9-12% Cr heat resistant steels[J].ISIJ International,2006,46(5):769-775.
【14】ERNEMAN J,SCHWIND M,LIU P,et al.Precipitation reactions caused by nitrogen uptake during service at high temperatures of a niobium stabilised austenitic stainless steel[J].Acta Materialia,2004,52(14):4337-4350.
【15】CIPOLLA L,DANIELSEN H K,VENDITTI D,et al.Conversion of MX nitrides to Z-phase in a martensitic 12% Cr steel[J].Acta Materialia,2010,58(2):669-679.
【16】殷凤仕,刘志良,薛冰,等.微量碳和氮对 9% Cr 耐热钢中第二相析出行为的影响[J].动力工程学报,2010(4):258-262.
【17】PARK D B,HUH M Y,JUNG W S,et al.Effect of vanadium addition on the creep resistance of 18Cr9Ni3CuNbN austenitic stainless heat resistant steel[J].Journal of Alloys and Compounds,2013,574:532-538.
【18】ISEDA A,OKADA H,SEMBA H,et al.Long term creep properties and microstructure of SUPER304H,TP347HFG and HR3C for A-USC boilers[J].Energy Materials:Materials Science and Engineering for Energy Systems,2007,2(4):199-206.
【19】DU J,LIANG J,ZHAO H,et al.Research on microstructure and mechanical property of S30432 superheater pipe aged at 700℃[J].Steel Research International,2012,83(11):1095-1102.
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