Please wait a minute...
Acta Metall Sin  2015, Vol. 51 Issue (11): 1306-1314    DOI: 10.11900/0412.1961.2015.00057
Current Issue | Archive | Adv Search |
INVESTIGATION OF TRIP EFFECT IN ZG06Cr13Ni4Mo MARTENSITIC STAINLESS STEEL BY IN SITU SYNCHROTRON HIGH ENERGY X-RAY DIFFRACTION
Shenghua ZHANG,Pei WANG(),Dianzhong LI,Yiyi LI
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
Download:  HTML  PDF(847KB) 
Export:  BibTeX | EndNote (RIS)      
Abstract  

After quenching and proper intercritical tempering, ZG06Cr13Ni4Mo martensitic stainless steel is composed of tempered martensite matrix and reversed austenite. The deformation induced martensitic transformation of reversed austenite occurring during the deformation results in the transformation induced plasticity (TRIP) effect, which is beneficial to the mechanical properties of this steel. However, studies on the TRIP effect of reversed austenite are limited to description of phenomenon and mechanism behind is not clear. In order to reveal the mechanical stability and transformation induced plasticity of the reversed austenite during tension test in tempered ZG06Cr13Ni4Mo steel, a custom-built mini tensile instrument has been designed and installed on Shanghai Synchrotron Radiation Facility to conduct the in situ synchrotron high energy X-ray diffraction (SHXRD) experiment during the uniaxial tension. Three samples, which were tempered at 620 ℃ with different holding times and cooling rates in order to obtain different volume fraction of reversed austenite, were used to investigate the relationship between the deformation induced martensitic transformation and work hardening behavior. The integral intensity and the full width at half maximum of diffraction peaks of the reversed austenite and tempered martensitic matrix under different engineering stress were recorded. The gradual decrease in the integral diffraction intensity of reversed austenite with increase in tensile stress indicates that the reversed austenite has been induced to transform into martensite during the tension deformation. Furthermore, the volume fraction of reversed austenite during tension was quantitatively calculated by fitting the whole diffraction spectra of reversed austenite and tempered martensitic matrix with the Rietveld refinement method. The evolution of the reversed austenite fraction indicates that the deformation induced martensitic transformation initiates at the macro-elastic stage and through the whole deformation, which is different to the retained austenite in TRIP steel. Meanwhile, the work hardening exponents of three samples with different volume fraction of reversed austenite have been compared. It is found that the deformation induced martensitic transformation of reversed austenite increases the dislocation density of martensitic matrix and results in the increase in the work-hardening exponent during the plastic deformation, which enhances the ductility of ZG06Cr13Ni4Mo martensitic stainless steel.

Key words:  martensitic stainless steel      synchrotron high energy X-ray diffraction      reversed austenite      mechanical stability      transformation induced plasticity      work-hardening exponent     
Fund: Supported by National Natural Science Foundation of China (No.51201167)

Cite this article: 

Shenghua ZHANG,Pei WANG,Dianzhong LI,Yiyi LI. INVESTIGATION OF TRIP EFFECT IN ZG06Cr13Ni4Mo MARTENSITIC STAINLESS STEEL BY IN SITU SYNCHROTRON HIGH ENERGY X-RAY DIFFRACTION. Acta Metall Sin, 2015, 51(11): 1306-1314.

URL: 

https://www.ams.org.cn/EN/10.11900/0412.1961.2015.00057     OR     https://www.ams.org.cn/EN/Y2015/V51/I11/1306

Fig.1  The loader (a) and controller (b) of the custom-built mini tensile instrument
Fig.2  The installation of custom-built mini tensile instrument on diffraction instrument rotated along the normal direction (ND), transverse direction (TD) and loading direction (LD) of tension sample
Fig.3  Schematic of the in situ synchrotron high energy X-ray diffraction experiment (q—Bragg diffraction angle)
Fig.4  Synchrotron high energy XRD spectra of sample 2 (a, b) and sample 3 (c, d) before (a, c) and after (b, d) deformation (Sample 2 and 3 are tempered at 620 ℃ for 1 and 2 h and then air cooled, respectively)
Fig.5  Variations of integral diffraction intensity of (111)g (a), (200)g (b), (220)g (c) and (311)g (d) of reversed austenite in sample 2 with different engineering stresses
Fig.6  Variations of integral diffraction intensity of (111)g (a), (200)g (b), (220)g (c) and (311)g (d) of reversed austenite in sample 3 with different engineering stresses
Fig.7  Variations of volume fraction of reversed austenite in sample 2 (a, b) and sample 3 (c, d) under different engineering stresses (a, c) and true strains (b, d)
Fig.8  Variations of dislocation density of martensite matrix with different engineering stresses for sample 2 (a) and sample 3 (b) during uniaxial tensile test
Fig.9  True stress-strain curves of ZG06Cr13Ni4Mo steel after different heat treatments (sample 1 is tempered at 620 ℃ for 1 h and then water cooled)
Fig.10  Variations of work-hardening exponent and volume fraction of austenite as a function of true strain for samples 1, 2 and 3
[1] Friis W L, Noren T M I. US Pat, 3378367, 1968
[2] Bilmes P D, Solari M, Llorente C L. Mater Charact, 2001; 46: 285
[3] Gesnouin C, Hazarabedian A, Bruzzoni P, Ovejero-Garcia J, Bilmes P, Llorente C. Corros Sci, 2004; 46: 1633
[4] Kane R D, Watkins M, Greer J B. Corrosion, 1977; 33: 231
[5] Bilmes P, Llorente C, Ipina J P. J Mater Eng Perform, 2000; 9: 609
[6] Song Y Y, Ping D H, Yin F X, Li X Y, Li Y Y. Mater Sci Eng, 2010; A527: 614
[7] Wang P, Xiao N M, Lu S P, Li D Z, Li Y Y. Mater Sci Eng, 2013; A586: 292
[8] Offerman S E, Van Dijk N H, Sietsma J, Grigull S, Lauridsen E M, Margulies L, Poulsen H F, Rekveldt M T, Van der Zwaag S. Science, 2002; 298: 1003
[9] Jacques P, Furnemont Q, Lani F, Pardoen T, Delannay F. Acta Mater, 2007; 55: 3681
[10] Lani F, Furnemont Q, Van Rompaey T, Delannay F, Jacques P J,Pardoen T. Acta Mater, 2007; 55: 3695
[11] Cheng S, Wang Y D, Choo H, Wang X L, Almer J D, Liaw P K, Lee Y K. Acta Mater, 2010; 58: 2419
[12] Blonde R, Jimenez-Melero E, Zhao L, Wright J P, Bruck E, Van der Zwaag S, Van Dijk N H. Acta Mater, 2012; 60: 565
[13] Choi K S, Liu W N, Sun X, Khaleel M A, Ren Y, Wang Y D. Metall Mater Trans, 2008; 39A: 3089
[14] Zhang S H, Wang P, Li D Z, Li Y Y. Mater Des, 2015; 84: 385
[15] Rietveld H M. Acta Cryst, 1967; 22: 151
[16] Jia N, Cong Z H, Sun X, Cheng S, Nie Z H, Ren Y, Liaw P K, Wang Y D. Acta Mater, 2009; 57: 3965
[17] Prince E. In: Young R A ed., The Rietveld Method. Oxford: Oxford University Press, 1993: 1
[18] Lutterotti L. MAUD. Version 2.038, Department of Materials Engineering, Engineering Faculty University of Trento, 2006
[19] Tomota Y, Tokuda H, Adachi Y, Wakita M, Minakawa N, Moriai A, Morii Y. Acta Mater, 2004; 52: 5737
[20] Timokhina I B, Hodgson P D, Pereloma E V. Metall Mater Trans, 2003; 34A: 1599
[21] Wang P, Lu S P, Li D Z, Kang X H, Li Y Y. Acta Metall Sin, 2008; 44: 681 (王 培, 陆善平, 李殿中, 康秀红, 李依依. 金属学报, 2008; 44: 681)
[22] Dunn C G, Koch E F. Acta Mater, 1957; 5: 548
[23] Jacques P, Furnemont Q, Pardoen T, Delannay F. Acta Mater, 2001; 49: 139
[24] Rizk A, Bourell D L. Scr Met, 1982; 16: 1321
[25] Sangal S, Goel N C, Tangri K. Metall Mater Trans, 1985; 16A: 2023
[1] Meng WANG, Zhenyu LIU, Chenggang LI. Effects of Ultra-Fast Cooling After Hot Rolling and Lamellarizing on Microstructure and Cryogenic Toughness of 5%Ni Steel[J]. 金属学报, 2017, 53(8): 947-956.
[2] Yonghua RONG,Nailu CHEN. The Principle and Mechanism of Enhancement of Both Strength and Ductility of Martensitic Steels by Carbon[J]. 金属学报, 2017, 53(1): 1-9.
[3] Yutuo ZHANG,Cong LI,Pei WANG,Dianzhong LI. IN SITU SYNCHROTRON X-RAY DIFFRACTION INVESTIGATION ON TENSILE PROPERTIES OF 9Ni STEEL[J]. 金属学报, 2016, 52(4): 403-409.
[4] Binshi XU,Jinxiang FANG,Shiyun DONG,Xiaoting LIU,Shixing YAN,Chaoqun SONG,Dan XIA. HEAT-AFFECTED ZONE MICROSTRUCTURE EVOLU- TION AND ITS EFFECTS ON MECHANICAL PROPERTIES FOR LASER CLADDING FV520B STAINLESS STEEL[J]. 金属学报, 2016, 52(1): 1-9.
[5] Haiwei HUANG, Zhenbo WANG, Li LIU, Xingping YONG, Ke LU. FORMATION OF A GRADIENT NANOSTRUCTURED SURFACE LAYER ON A MARTENSITIC STAINLESS STEEL AND ITS EFFECTS ON THE ELECTRO- CHEMICAL CORROSION BEHAVIOR[J]. 金属学报, 2015, 51(5): 513-518.
[6] FENG Rui,ZHANG Meihan,CHEN Nailu,ZUO Xunwei,RONG Yonghua. FINITE ELEMENT SIMULATION OF THE EFFECT OF STRESS RELAXATION ON STRAIN-INDUCED MARTENSITIC TRANSFORMATION[J]. 金属学报, 2014, 50(4): 498-506.
[7] WANG Shuai, YANG Chunguang, XU Dake, SHEN Minggang, NAN Li, YANG Ke. EFFECT OF HEAT TREATMENT ON ANTIBACTERIAL PERFORMANCE OF 3Cr13MoCu MARTENSITIC STAINLESS STEEL[J]. 金属学报, 2014, 50(12): 1453-1460.
[8] XU Yong, ZHANG Shihong, CHENG Ming, SONG Hongwu,WANG Sucheng. EFFECT OF LOADING MODES ON  MECHANICAL PROPERTY AND STRAIN INDUCED MARTENSITE  TRANSFORMATION OF AUSTENITIC STAINLESS STEELS[J]. 金属学报, 2013, 49(7): 775-782.
[9] LEI Mingkai WANG Kesheng OU Yi Xiang ZHANG Lei. PLASMA–BASED LOW–ENERGY NITROGEN ION IMPLANTATION OF 2Cr13 MARTENSITIC STAINLESS STEEL USED IN PUMPS AND VALVES[J]. 金属学报, 2011, 47(12): 1490-1494.
[10] CHENG Xiaojuan WANG Hong KANG Guozheng DONG Yawei LIU Yujie. STUDY ON STRAIN--INDUCED MARTENSITE TRANSFORMATION OF 304 STAINLESS STEEL DURING RATCHETING DEFORMATION[J]. 金属学报, 2009, 45(7): 830-834.
[11] YANG Yuehui CAI Qingwu WU Huibin WANG Hua. FORMATION OF REVERSED AUSTENITE AND ITS EFFECT ON CRYOGENIC TOUGHNESS OF 9Ni STEEL DURING TWO--PHASE REGION HEAT TREATMENT[J]. 金属学报, 2009, 45(3): 270-274.
[12] ;. INVESTIGATION ON PHASE TRANSFORMATION OF ZG06Cr13Ni4Mo IN TEMPERING PROCESS WITH LOW HEATING RATE[J]. 金属学报, 2008, 44(6): 681-685 .
[13] YIN Zhongda; LI Hiaodong;LI Haibin; LAI Zhonghong(Harbin Instilute of Technology; Harbin 150001)(Manuscript received 94-01-13; in revised form 94-06-06). AGING MECHANISM OF 18Ni MARAGING STEEL[J]. 金属学报, 1995, 31(1): 7-13.
[14] HU Guangli;LIU Zhengtang;WANG Ping;HUA Wenjun;KANG Mokuang Northwestern Polytechnical University. TEMPERED BAINITE EMBRITTLEMENT IN SOME STRUCTURAL STEELS[J]. 金属学报, 1989, 25(2): 34-39.
No Suggested Reading articles found!