Hot rolling and annealing effects on the microstructure and mechanical properties of ODS austenitic steel fabricated by electron beam selective melting

doi:10.1007/s11706-016-0327-y

Front. Mater. Sci.

2016, Vol. 10

Issue (1) : 73-79 https://doi.org/10.1007/s11706-016-0327-y

RESEARCH ARTICLE

Hot rolling and annealing effects on the microstructure and mechanical properties of ODS austenitic steel fabricated by electron beam selective melting

Rui GAO¹,Wen-jun GE²,Shu MIAO¹,Tao ZHANG^1,^*(

),Xian-ping WANG¹,Qian-feng FANG^1,^*(

)

1. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
2. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

Download: PDF(1533 KB) HTML
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks

Abstract

The grain morphology, nano-oxide particles and mechanical properties of oxide dispersion strengthened (ODS)-316L austenitic steel synthesized by electron beam selective melting (EBSM) technique with different post-working processes, were explored in this study. The ODS-316L austenitic steel with superfine nano-sized oxide particles of 30–40 nm exhibits good tensile strength (412 MPa) and large total elongation (about 51%) due to the pinning effect of uniform distributed oxide particles on dislocations. After hot rolling, the specimen exhibits a higher tensile strength of 482 MPa, but the elongation decreases to 31.8% owing to the introduction of high-density dislocations. The subsequent heat treatment eliminates the grain defects induced by hot rolling and increases the randomly orientated grains, which further improves the strength and ductility of EBSM ODS-316L steel.

Keywords electron beam selective melting ODS-316L steel powder hot rolling microstructure tensile strength

Corresponding Author(s): Tao ZHANG,Qian-feng FANG

Online First Date: 25 December 2015 Issue Date: 15 January 2016

Cite this article:

Rui GAO,Wen-jun GE,Shu MIAO, et al. Hot rolling and annealing effects on the microstructure and mechanical properties of ODS austenitic steel fabricated by electron beam selective melting[J]. Front. Mater. Sci., 2016, 10(1): 73-79.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-016-0327-y
https://academic.hep.com.cn/foms/EN/Y2016/V10/I1/73

Tab.1 Nominal chemical composition of commercial 316L steel powder

Tab.2 The process parameters of ODS-316L steel fabrication

Fig.1 (a) The sketch of scanning strategies, (b) the photos of builds fabricated by EBSM and plates produced by SPS, (c) dimension of tensile specimen, and (d) the schematic view of the orientation of specimens cut from the parent materials for tensile test.

Fig.2 SEM images of (a) as-received 316L steel powders and (b) mixed powders. (c) Particle size distribution of the 316L steel powders and (d) EDS analysis showing the presence of Y₂O₃ particles.

Fig.3 A micrograph of ODS-316L steel from top view.

Fig.4 3D-OM images for different ODS-316L alloy components fabricated by (a) EBSM, (b) EBSM-HR, and (c) EBSM-HR-HT@800°C.

Fig.5 TEM images of microstructure for different ODS-316L specimen prepared by (a) EBSM, (b) EBSM-HR, and (c) EBSM-HR-HT@800°C (inset is the SAED of matrix). (d) EDS analysis of the Y₂O₃ particle and (e) the size distribution of nano-oxide particles in EBSM samples.

Fig.6 (a) Tensile stress–strain curves. Fracture images of (b) HR-ODS-316L steel and (c) HR-HT-ODS-316L steel.

Tab.3 Results of mechanical properties tested for different ODS-316L steels

Fig.7 SEM images of the side view of fracture surface for (a) HR-ODS-316L steel and (b) HR-HT-ODS-316L steel.

Fig.8 High-magnification SEM images of fracture section for (a) HR-ODS-316L steel and (b) HR-HT-ODS-316L steel.

Tab.1

1	Ishino S. History, progress, achievements and future prospect of research activities on fusion materials by Japanese university researchers. Journal of Nuclear Materials, 1996, 233–237: 1535–1540
2	Robertson C, Panigrahi B K, Balaji S, . Particle stability in model ODS steel irradiated up to 100 dpa at 600°C: TEM and nano-indentation investigation. Journal of Nuclear Materials, 2012, 426(1–3): 240–246
3	Kim I S, Hunn J D, Hashimoto N, . Defect and void evolution in oxide dispersion strengthened ferritic steels under 3.2 MeV Fe+ ion irradiation with simultaneous helium injection. Journal of Nuclear Materials, 2000, 280(3): 264–274
4	Dai L, Liu Y C, Dong Z Z. Size and structure evolution of yttria in ODS ferritic alloy powder during mechanical milling and subsequent annealing. Powder Technology, 2012, 217: 281–287
5	Alinger M J, Odette G R, Hoelzer D T. On the role of alloy composition and processing parameters in nanocluster formation and dispersion strengthening in nanostructured ferritic alloys. Acta Materialia, 2009, 57(2): 392–406
6	Rahmanifard R, Farhangi H, Novinrooz A J. Optimization of mechanical alloying parameters in 12YWT ferritic steel nanocomposite. Materials Science and Engineering A, 2010, 527(26): 6853–6857
7	Yao W, Niu X, Zhou L, . Competition growth of α and β phases in Ti-50 at.%Al peritectic alloy during the rapid solidification by laser melting technique. Acta Metallurgica Sinica (English Letters), 2013, 26(5): 523–532
8	Murr L E, Gaytan S M, Ceylan A, . Characterization of titanium aluminide alloy components fabricated by additive manufacturing using electron beam melting. Acta Materialia, 2010, 58(5): 1887–1894
9	Hrabe N, Quinn T. Effects of processing on microstructure and mechanical properties of a titanium alloy (Ti–6Al–4V) fabricated using electron beam melting (EBM). Materials Science and Engineering A, 2013, 573: 271–277
10	Murr L E, Gaytan S M, Medina F, . Characterization of Ti–6Al–4V open cellular foams fabricated by additive manufacturing using electron beam melting. Materials Science and Engineering A, 2010, 527(7–8): 1861–1868
11	Saresh N, Pillai M G, Mathew J. Investigations into the effects of electron beam welding on thick Ti–6Al–4V titanium alloy. Journal of Materials Processing Technology, 2007, 192–193: 83–88
12	Luo Y Y, Xi Z P, Zeng W D, . Characteristics of high-temperature deformation behavior of Ti–45Al–2Cr–3Ta–0.5W alloy mater. Journal of Materials Engineering and Performance, 2014, 23(10): 3577–3585
13	Lin X, Yue T M. Phase formation and microstructure evolution in laser rapid forming of graded SS316L/Rene88DT alloy. Materials Science and Engineering A, 2005, 402(1–2): 294–306
14	Milberg J, Sigl M. Electron beam sintering of metal powder. Production Engineering, 2008, 2(2): 117–122
15	Boegelein T, Dryepondt S N, Pandey A, . Mechanical response and deformation mechanisms of ferritic oxide dispersion strengthened steel structures produced by selective laser melting. Acta Materialia, 2015, 87: 201–215

[1]	Chengzhi LUO, Guanghui LIU, Min ZHANG. Electric-field-induced microstructure modulation of carbon nanotubes for high-performance supercapacitors[J]. Front. Mater. Sci., 2019, 13(3): 270-276.
[2]	Heng CHEN, Yun CHEN, Hang ZHAN, Guang WU, Jian Ming XU, Jian Nong WANG. Preparation of carbon nanotube/epoxy composite films with high tensile strength and electrical conductivity by impregnation under pressure[J]. Front. Mater. Sci., 2019, 13(2): 165-173.
[3]	Abdollah SABOORI, Matteo PAVESE, Claudio BADINI, Paolo FINO. Development of Al- and Cu-based nanocomposites reinforced by graphene nanoplatelets: Fabrication and characterization[J]. Front. Mater. Sci., 2017, 11(2): 171-181.
[4]	Qianli HUANG,Ningmin HU,Xing YANG,Ranran ZHANG,Qingling FENG. Microstructure and inclusion of Ti–6Al–4V fabricated by selective laser melting[J]. Front. Mater. Sci., 2016, 10(4): 428-431.
[5]	Qianli HUANG,Xujie LIU,Xing YANG,Ranran ZHANG,Zhijian SHEN,Qingling FENG. Specific heat treatment of selective laser melted Ti–6Al–4V for biomedical applications[J]. Front. Mater. Sci., 2015, 9(4): 373-381.
[6]	Yongze CAO,Qiang WANG,Guojian LI,Yonghui MA,Jiaojiao DU,Jicheng HE. Effects of different magnetic flux densities on microstructure and magnetic properties of molecular-beam-vapor-deposited nanocrystalline Fe₆₄Ni₃₆ thin films[J]. Front. Mater. Sci., 2015, 9(2): 163-169.
[7]	Masaaki TAKEZAWA,Hiroyuki TANEDA,Yuji MORIMOTO. Relationship between microstructure and magnetic domain structure of Nd--Fe--B melt-spun ribbon magnets[J]. Front. Mater. Sci., 2015, 9(2): 206-210.
[8]	Peng-Cheng XIA,Feng-Wen CHEN,Kun XIE,Ling QIAO,Jin-Jiang YU. Influence of microstructures on thermal fatigue property of a nickel-base superalloy[J]. Front. Mater. Sci., 2015, 9(1): 85-92.
[9]	Ya-Ming WANG,Jun-Wei GUO,Yun-Feng WU,Yan LIU,Jian-Yun CAO,Yu ZHOU,De-Chang JIA. Biocorrosion resistance of coated magnesium alloy by microarc oxidation in electrolyte containing zirconium and calcium salts[J]. Front. Mater. Sci., 2014, 8(3): 295-306.
[10]	Zhen-Tao YU,Ming-Hua ZHANG,Yu-Xing TIAN,Jun CHENG,Xi-Qun MA,Han-Yuan LIU,Chang WANG. Designation and development of biomedical Ti alloys with finer biomechanical compatibility in long-term surgical implants[J]. Front. Mater. Sci., 2014, 8(3): 219-229.
[11]	Zhi-Wen CHEN, Chan-Hung SHEK, C. M. Lawrence WU, Joseph K. L. LAI. Recent research situation in tin dioxide nanomaterials: synthesis, microstructures, and properties[J]. Front Mater Sci, 2013, 7(3): 203-226.
[12]	Wei YAN, Wei WANG, Yi-Yin SHAN, Ke YANG. Microstructural stability of 9--12%Cr ferrite/martensite heat-resistant steels[J]. Front Mater Sci, 2013, 7(1): 1-27.
[13]	Hai-Jun LEI, Bin LIU, Dai-Ning FANG, . The coefficient of thermal expansion of biomimetic composites[J]. Front. Mater. Sci., 2010, 4(3): 234-238.
[14]	Ping HU, Wei YAN, Wei WANG, Yi-yin SHAN, Ke YANG, Wei SHA, Zhan-li GUO, . Study on Laves phase in an advanced heat-resistant steel[J]. Front. Mater. Sci., 2009, 3(4): 434-441.
[15]	Ning CAO, Zhen-yi FEI, Yong-xin QI, Wen-wen CHEN, Lu-lu SU, Qi WANG, Mu-sen LI, . Characterization and tribological application of diamond-like carbon (DLC) films prepared by radio-frequency plasma-enhanced chemical vapor deposition (RF-PECVD) technique[J]. Front. Mater. Sci., 2009, 3(4): 409-414.

Viewed

Full text

Abstract

Cited

Shared

Discussed