Identification of Retained Austenite in 9Cr-1.4W-0.06Ta-0.12C Reduced Activation Ferritic Martensitic Steel

被引：7

作者：

Mythili, Rengachari ^{[1
,2
]}

Kirana, Ravi ^{[3
]}

Singh, Loushambam Herojit ^{[4
]}

Govindaraj, Ramanujam ^{[2
,5
]}

Sinha, Anil K. ^{[6
]}

Singh, Manvendra N. ^{[7
]}

Saroja, Saibaba ^{[1
]}

Vijayalakshmi, Muraleedharan ^{[1
]}

Deb, Sudip K. ^{[7
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Met & Mat Grp, Kalpakkam 603102, Tamil Nadu, India

[2] IGCAR, Homi Bhabha Natl Inst, Kalpakkam 603102, Tamil Nadu, India

[3] SRM Inst Sci, Dept Phys & Nanotechnol Technol, Kattankulathur 603203, India

[4] NIT Manipur, Dept Phys, Langol 795004, India

[5] Indira Gandhi Ctr Atom Res, Mat Sci Grp, Kalpakkam 603102, Tamil Nadu, India

[6] Univ Petr & Energy Studies, Dept Phys, Dehra Dun 248007, Uttarakhand, India

[7] Raja Ramanna Ctr Adv Technol, Indore 452013, India

来源：

SYMMETRY-BASEL | 2022年 / 14卷 / 02期

关键词：

reduced activation ferritic martensitic steel; microstructure; martensite; retained austenite; automated crystal orientation mapping-transmission electron microscopy; Mossbauer spectroscopy; MICROSTRUCTURE; STABILITY; TOUGHNESS; STRENGTH; BEHAVIOR; CREEP; PHASE;

D O I：

10.3390/sym14020196

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Reduced activation ferritic martensitic (RAFM) 9Cr steels, which are candidate materials for the test blanket module (TBM) of nuclear fusion reactors, are considered to be air hardenable. However, alloy composition and the processing conditions play a significant role during the transformation of austenite to martensite/ferrite on cooling. The presence of retained austenite is known to influence the mechanical properties of the steel. Identifying very low amounts of retained austenite is very challenging though conventional microscopy. This paper aims at identifying a low amount of retained austenite in normalized 9Cr-1.4W-0.06Ta-0.12C RAFM steel using synchrotron X-ray diffraction and Mossbauer spectroscopy and confirmed by advanced automated crystal orientation mapping in transmission electron microscopy. Homogeneity of austenite has been understood to influence the microstructure of the normalized steel, which is discussed in detail.

引用

页数：10