Austenite growth behavior of Fe-13Cr-5Ni martensitic stainless steel under continuous heating

SONG Peng-cheng; LIU Wen-bo; LIU Lu; ZHANG Chi; YANG Zhi-gang

doi:10.13374/j.issn2095-9389.2017.01.009

Volume 39 Issue 1

Jan. 2017

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SONG Peng-cheng, LIU Wen-bo, LIU Lu, ZHANG Chi, YANG Zhi-gang. Austenite growth behavior of Fe-13Cr-5Ni martensitic stainless steel under continuous heating[J]. Chinese Journal of Engineering, 2017, 39(1): 68-74. doi: 10.13374/j.issn2095-9389.2017.01.009

Citation:

SONG Peng-cheng, LIU Wen-bo, LIU Lu, ZHANG Chi, YANG Zhi-gang. Austenite growth behavior of Fe-13Cr-5Ni martensitic stainless steel under continuous heating[J]. Chinese Journal of Engineering, 2017, 39(1): 68-74. doi: 10.13374/j.issn2095-9389.2017.01.009

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Austenite growth behavior of Fe-13Cr-5Ni martensitic stainless steel under continuous heating

doi: 10.13374/j.issn2095-9389.2017.01.009

1) Key Laboratory of Advanced Materials of the Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
2) School of Nuclear Science and Technology, Xian Jiaotong University, Xi'an 710049, China
3) State Nuclear Power Research Institute, Beijing 102209, China

Received Date: 2016-03-24

Abstract

Abstract

Microstructure transformation of Fe-13Cr-5Ni martensitic stainless steel during continuous heating was investigated by optical microscopy, transmission electronic microscopy, X-ray diffraction, and microhardness testing. Experimental results show that at the heating rate of 10℃·s^-1,there is an austenite memory phenomenon after heating to the austenite phase region and quenching to room temperature. Austenite tends to nucleate and grow at lath boundaries in an acicular shape, which has Kurdjumov-Sachs (K-S) orientation relationships with the parent phase. Furthermore, heating to different temperatures in the dual-phase region and quenching to room temperature, the amount of retained austenite in samples firstly increases, gets to the peak at 650℃, and then decreases with the increasing of annealing temperature. This trend is coincident with the trend of micro-hardness of the same samples.
- martensitic stainless steel,
- heating,
- austenite,
- growth,
- memory effects

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References(18)

References

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