Determination of Internal Stresses During Pearlite Transformation of 0.8c–1.5mn Steel Through In-Situ Neutron Diffraction

2020 ◽  
Author(s):  
Satoshi Morooka ◽  
Nobuo Nakada ◽  
Yuhki Tsukada ◽  
Wu Gong ◽  
Takuro Kawasaki ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Internal Stresses ◽  
In Situ Neutron Diffraction

Determination of Internal Stresses During Pearlite Transformation of 0.8c–1.5Mn Steel Through In-Situ Neutron Diffraction

2020 ◽  
Author(s):  
Satoshi Morooka ◽  
Nobuo Nakada ◽  
Yuhki Tsukada ◽  
Wu Gong ◽  
Takuro Kawasaki ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Internal Stresses

scholarly journals Determination of crystallographic young’s modulus for sheet metals by in situ neutron diffraction

2017 ◽  
Vol 896 ◽  
pp. 012123
Author(s):  
S J Vitzthum ◽  
C Hartmann ◽  
H A Weiss ◽  
G Baumgartner ◽  
M Hofmann ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Sheet Metals ◽  
In Situ Neutron Diffraction

In Situ Neutron Diffraction Analysis of Phase Transformation Kinetics in TRIP Steel

2005 ◽  
Vol 502 ◽  
pp. 339-344 ◽  
Author(s):  
Jozef Zrník ◽  
O. Muránsky ◽  
Petr Lukáš ◽  
Petr Šittner ◽  
Z. Nový
Keyword(s):  
Neutron Diffraction ◽  
Trip Steel ◽  
Retained Austenite ◽  
Volume Fraction ◽  
Internal Stresses ◽  
Austenite Transformation ◽  
Austenite Stability ◽  
Retained Austenite Stability ◽  
In Situ Neutron Diffraction

The precise characterization of the multiphase microstructure of low alloyed TRIP steels is of great importance for the interpretation and optimisation of their mechanical properties. In-situ neutron diffraction experiment was employed for monitoring of conditioned austenite transformation to ferrite, and also for retained austenite stability evaluation during subsequent mechanical loading. The progress in austenite decomposition to ferrite is monitored at different transformation temperatures. The relevant information on the course of transformation is extracted from neutron diffraction spectra. The integrated intensities of austenite and ferrite neutron diffraction profiles over the time of transformation are then assumed as a measure of the volume fractions of both phases in dependence on transformation temperature. Useful information was also obtained on retained austenite stability in TRIP steel during mechanical testing. The in-situ neutron diffraction experiments were conducted at two different diffractometers to assess the reliability of neutron diffraction technique in monitoring the transformation of retained austenite during room temperature tensile test. In both experiments the neutron investigation was focused on the volume fraction quantification of retained austenite as well as on internal stresses rising in structure phases due to retained austenite transformation.

scholarly journals Determination of Coherency and Rigidity Temperatures in Al-Cu Alloys Using In Situ Neutron Diffraction During Casting

JOM ◽  
2014 ◽  
Vol 66 (8) ◽  
pp. 1425-1430 ◽  
Author(s):  
Jean-Marie Drezet ◽  
Bastien Mireux ◽  
Zoltan Szaraz ◽  
Thilo Pirling
Keyword(s):  
Neutron Diffraction ◽  
Cu Alloys ◽  
In Situ Neutron Diffraction

scholarly journals In situ Neutron Diffraction during Casting: Determination of Rigidity Point in Grain Refined Al-Cu Alloys

Materials ◽  
2014 ◽  
Vol 7 (2) ◽  
pp. 1165-1172 ◽  
Author(s):  
Jean-Marie Drezet ◽  
Bastien Mireux ◽  
Zoltan Szaraz ◽  
Thilo Pirling
Keyword(s):  
Neutron Diffraction ◽  
Cu Alloys ◽  
In Situ Neutron Diffraction

Stress Induced Martensitic Transformation in Shape Memory Alloys Studied by In-Situ Neutron Diffraction Techniques

2000 ◽  
Author(s):  
P. Šittner ◽  
V. Novák ◽  
P. Lukáš ◽  
D. Neov
Keyword(s):  
Martensitic Transformation ◽  
Neutron Diffraction ◽  
Shape Memory ◽  
Smart Materials ◽  
Hybrid Composites ◽  
Tensile Tests ◽  
Internal Stresses ◽  
Lattice Plane ◽  
In Situ Neutron Diffraction

Abstract Shape memory alloy (SMA) elements are being embedded in smart materials and hybrid composites as actuating and/or sensing elements responding to the stress and temperature stimuli. In order to design smart composites, in-situ experimental information about evolution of internal stresses and phase fractions in the embedded SMA elements and internal stresses in neighboring matrix during actuation cycles would be of interest. Such experimental data have to be obtained nondestructively from the microscopic particles or fibres deep in the bulk specimens exposed to stress and/or thermal variations. In-situ neutron diffraction experimental techniques fulfill in principle these requirements. However, reliable evaluation of internal stresses from neutron diffraction experiments in the smart SMA composites can be made only after the lattice plane responses of monolithic SMAs in thermomechanical cyclic loads are fully understood. In this paper, the results of the in-situ investigations of stress induced martensitic transformation (SIMT) in tensile tests carried out on monolithic CuAlZnMn SMA polycrystal are reported, and the observed lattice plane responses are interpreted using a selfconsistent model of SMA polycrystal.

Study of tempering behavior of lath martensite using in situ neutron diffraction

2015 ◽  
Vol 107 ◽  
pp. 29-32 ◽  
Author(s):  
Z.M. Shi ◽  
W. Gong ◽  
Y. Tomota ◽  
S. Harjo ◽  
J. Li ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Lath Martensite ◽  
In Situ Neutron Diffraction
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