To investigate the influence of tempering process on microstructural evolutions and mechanical properties of 00Cr13Ni4Mo supermartensitic stainless steel (SMSS), specimens were tempered in the temperature range of 520-720 ℃ for 3 h followed by air cooling and an optimized tempering temperature was chosen to prolong holding time from 3 to 12 h. After heat treatments, microstructure examination was conducted by scanning electron microscope,X-ray diffraction examinations, hardness measurements and tensile tests. The results revealed that the superior mechanical properties were achieved by quenching at 1040 ℃ for 1 h+water cooling and tempering at 600 ℃ for 3 h+air cooling. Increasing isothermal tempering time could improve the toughness notably. It was believed that the property was correlated with the microstructure of tempered lath martensite and retained austenite. More retained austenite content is beneficial to the higher toughness of the SMSS.
参考文献
| [1] | H. Nakamichi;K. Sato;Y. Miyata;M. Kimura;K. Masamura .Quantitative analysis of Cr-depleted zone morphology in low carbon martensitic stainless steel using FE-(S)TEM[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2008(2):309-315. |
| [2] | Ueda M;Amaya H;Ogawa K.Corrosion Resistance of Weldable Super 13Cr Stainless Steel in H2 S Containing CO2 Environments[A].Denver:NACE International,1996:58. |
| [3] | Griffiths A;Nimmo W;Roebuck B et al.A Novel Approach to Characterising the Mechanical Properties of Supermartensitic 13Cr Stainless Steel Welds[J].Materials Science and Engineering,2004,384A(1/2):83. |
| [4] | Carrouge D;Bhadeshia H K D H;Woollin P .Effect of δ-Ferrite on Impact Properties of Supermartensitic Stainless Steel Heat Affected Zones[J].Science and Technology of Welding and Joining,2004,9(05):377. |
| [5] | P.D. Bilmes;M. Solari;C.L. Llorente .Characteristics and effects of austenite resulting from tempering of 13Cr-NiMo martensitic steel weld metals[J].Materials Characterization,2001(4):285-296. |
| [6] | B. Qin;Z. Y. Wang;Q. S. Sun .Effect of tempering temperature on properties of 00Crl6Ni5Mo stainless steel[J].Materials Characterization,2008(8):1096-1100. |
| [7] | Rodrigues C A D;Lorenzo P L D;Sokolowski A et al.Titanium and Molybdenum Content in Supermartensitic Stainless Steel[J].Materials Science and Engineering,2007,460-461A:149. |
| [8] | 方旭东,张寿禄,杨常春,夏焱,赵建伟.TGOG13Cr-1超级马氏体不锈钢的组织和性能[J].钢铁,2007(08):74-77. |
| [9] | Al Dawood M;El Mahallawi I S;Abd El Azim M E et al.Thermal Aging of 16Cr-5Ni-lMo Stainless Steel Part 1:Microstructural Analysis[J].Materials Science and Technology,2004,20(03):363. |
| [10] | Al Dawood M;El Mahallawi I S;Abd El Azim M E et al.Thermal Aging of 16Cr-SNi-lMo Stainless Steel Part 2:Mechanical Property Characterization[J].Materials Science and Technology,2004,20(03):370. |
| [11] | Leem D S;Lee Y D;Jun J H et al.Amount of Retained Austenite at Room Temperature After Reverse Transformation of Martensite to Austenite in an Fe-13%Cr-7%Ni-3%SiMartensitic Stainless Steel[J].Scripta Materialia,2001,45(07):767. |
| [12] | 王培,陆善平,李殿中,康秀红,李依依.低加热速率下ZG06Cr13Ni4Mo低碳马氏体不锈钢回火过程的相变研究[J].金属学报,2008(06):681-685. |
| [13] | K. P. Balan;A. Venugopal Reddy;D. S. Sarma .Austenite precipitation during tempering in 16Cr-2Ni martensitic stainless steels[J].Scripta materialia,1998(7):901-905. |
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