In situ and ex situ neutron diffraction study on deformation behavior of high-nitrogen, Ni-free duplex stainless steel

2012 ◽  
Vol 67 (2) ◽  
pp. 141-144 ◽  
Author(s):  
Tae-Ho Lee ◽  
Heon-Young Ha ◽  
Jun-Yun Kang ◽  
Byoungchul Hwang ◽  
Wanchuk Woo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Neutron Diffraction ◽  
Diffraction Study ◽  
Duplex Stainless Steel ◽  
Deformation Behavior ◽  
Neutron Diffraction Study ◽  
Ex Situ ◽  
High Nitrogen

Structural evolution in LiFePO4-based battery materials: In-situ and ex-situ time-of-flight neutron diffraction study

2014 ◽  
Vol 258 ◽  
pp. 356-364 ◽  
Author(s):  
I.A. Bobrikov ◽  
A.M. Balagurov ◽  
Chih-Wei Hu ◽  
Chih-Hao Lee ◽  
Tsan-Yao Chen ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Study ◽  
Time Of Flight ◽  
Structural Evolution ◽  
Neutron Diffraction Study ◽  
Ex Situ ◽  
Battery Materials

In-Situ Neutron Diffraction Study of Strain-Induced Martensite Formation in 304L Stainless Steel at a Cryogenic Temperature

2004 ◽  
Vol 840 ◽  
Author(s):  
Kaixiang Tao ◽  
James J. Wall ◽  
Donald W. Brown ◽  
Hongqi Li ◽  
Sven C. Vogel ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Phase Transformation ◽  
Neutron Diffraction ◽  
Diffraction Study ◽  
Atomic Plane ◽  
Neutron Diffraction Study ◽  
304L Stainless Steel ◽  
Martensite Formation ◽  
In Situ Neutron Diffraction

ABSTRACTIn-situ, time-of-flight neutron diffraction was performed to investigate the martensitic phase transformation during quasi-static uniaxial compression testing of 304L stainless steel at 300K (room temperature) and 203K. In-situ neutron diffraction study enabled the bulk measurement of intensity evolution for each hkl atomic plane during the austenite (fcc) to martensite (hcp and bcc) phase transformation. The neutron diffraction patterns show that the martensite phases started to develop at about 2.5% applied strain (600 MPa applied stress) at 203K. However, at 300K, the martensite formation was not observed throughout the test. Furthermore, from changes in the relative intensities of individual hkl atomic planes, the selective phase transformation can be well understood and the grain orientation relationship between the austenite and newly-forming martensite phases can be determined. The results show that the fcc grain families with {111} and {200} plane normals parallel to the loading axis are favored for the “fcc to hcp” and “fcc to bcc” transformations, respectively.

Sign in / Sign up

Export Citation Format

Share Document