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Journal Articles

Recrystallization of bulk nanostructured magnesium alloy AZ31 after severe plastic deformation; An in situ diffraction study

Liss, K.-D.*; Han, J.-K.*; Blankenburg, M.*; Lienert, U.*; Harjo, S.; Kawasaki, Takuro; Xu, P. G.; Yukutake, Eitaro*; Kawasaki, M.*

Journal of Materials Science, 23 Pages, 2024/00

 Times Cited Count:0 Percentile:0(Materials Science, Multidisciplinary)

Journal Articles

Abnormal grain growth; A Spontaneous activation of competing grain rotation

Liss, K.-D.*; Xu, P. G.; Shiro, Ayumi*; Zhang, S. Y.*; Yukutake, Eitaro*; Shobu, Takahisa; Akita, Koichi*

Advanced Engineering Materials, 9 Pages, 2023/00

Journal Articles

Heat-induced structural changes in magnesium alloys AZ91 and AZ31 investigated by in situ synchrotron high-energy X-ray diffraction

Liu, X. J.*; Xu, P. G.; Shiro, Ayumi*; Zhang, S. Y.*; Shobu, Takahisa; Yukutake, Eitaro*; Akita, Koichi*; Zolotoyabko, E.*; Liss, K.-D.*

Journal of Materials Science, 57(46), p.21446 - 21459, 2022/12

 Times Cited Count:3 Percentile:38.91(Materials Science, Multidisciplinary)

Journal Articles

Study of hierarchical deformation mechanism in LPSO-type magnesium alloys using diffraction method

Shiro, Ayumi*; Shobu, Takahisa; Hagihara, Koji*; Watanabe, Masashi*

SPring-8/SACLA Riyo Kenkyu Seikashu (Internet), 10(5), p.438 - 446, 2022/10

no abstracts in English

Journal Articles

Neutron diffraction monitoring of as-cast Mg$$_{97}$$Zn$$_{1}$$Y$$_{2}$$ during compression and tension

Harjo, S.; Aizawa, Kazuya; Gong, W.*; Kawasaki, Takuro

Materials Transactions, 61(5), p.828 - 832, 2020/04

 Times Cited Count:6 Percentile:36.45(Materials Science, Multidisciplinary)

Journal Articles

${it In situ}$ investigation of the microstructure evolution in Long-Period-Stacking-Ordered (LPSO) magnesium alloys as a function of the temperature

M$'a$this, K.*; Drozdenko, D.*; N$'e$meth, G.*; Harjo, S.; Gong, W.*; Aizawa, Kazuya; Yamasaki, Michiaki*; Kawamura, Yoshihito*

Frontiers in Materials (Internet), 6, p.270_1 - 270_9, 2019/11

 Times Cited Count:7 Percentile:30.71(Materials Science, Multidisciplinary)

Oral presentation

Evaluation of specific plastic deformation behavior for LPSO-type magnesium alloy by in-situ neutron diffraction

Morooka, Satoshi; Gong, W.; Harjo, S.; Aizawa, Kazuya

no journal, , 

Recently, magnesium alloys containing a Mg-Zn-Y long-period stacking ordered (LPSO) phase structure have been reported to exhibit excellent mechanical properties, including high strength and reasonable ductility. It is very important to determine the differences in plastic deformation behaviors, mechanical properties by existing of LPSO phase structure and their origin of deformation mechanism induced by the crystal structures. In this study, the reversible cyclic hardening behavior of LPSO-type magnesium alloys is investigated using ${it in-situ}$ TOF neutron diffraction during dynamic tension-compression cyclic loading conditions at constant $$pm$$0.5 % strain amplitude. The peak stresses in both tension and compression were observed to increase gradually up to the 200th cycle. At the 200th tension-compression cycle, tension and compression peak stresses are approximately +97.4 and -176.7 MPa, respectively. The peak stress for the compression was observed to be larger than that for the tension, suggesting that kinking accompanying with hardening was occurred by compression deformation. The evidence of reversible deformation behavior was obtained from the change in individual (${it hk-il}$) integrated intensity during real-time tension-compression cyclic testing.

Oral presentation

Evolution of internal stresses during cyclic deformation in LPSO type of magnesium alloy monitored by in-situ neutron diffraction

Morooka, Satoshi; Gong, W.*; Aizawa, Kazuya; Kawasaki, Takuro; Harjo, S.

no journal, , 

Oral presentation

Monitoring of tensile deformation of MgZn$$_{1}$$Y$$_{2}$$ alloy by neutron diffraction

Harjo, S.; Aizawa, Kazuya; Gong, W.*; Kawasaki, Takuro

no journal, , 

no abstracts in English

Oral presentation

In situ neutron diffraction during compression or tension of Mg$$_{97}$$Zn$$_{1}$$Y$$_{2}$$ consisting of LPSO phase and $$alpha$$Mg phase

Harjo, S.; Aizawa, Kazuya; Gong, W.*; Kawasaki, Takuro

no journal, , 

Oral presentation

Relation between extrusion ratio phase stress sharing during tension in Mg$$_{97}$$Zn$$_{1}$$Y$$_{2}$$

Harjo, S.; Aizawa, Kazuya; Gong, W.*; Kawasaki, Takuro; Yamasaki, Michiaki*; Kawamura, Yoshihito*

no journal, , 

no abstracts in English

Oral presentation

In situ neutron diffraction during compression of LPSO-Mg alloy with different extrusion ratio

Harjo, S.; Aizawa, Kazuya; Kawasaki, Takuro; Gong, W.; Yamasaki, Michiaki*; Kawamura, Yoshihito*

no journal, , 

Oral presentation

Tensile strengthening of a Mg alloy containing 25-vol% LPSO by hot extrusion revealed by neutron diffraction

Harjo, S.; Gong, W.; Aizawa, Kazuya; Kawasaki, Takuro; Yamasaki, Michiaki*; Kawamura, Yoshihito*

no journal, , 

Oral presentation

Deformation behavior during tension in a Mg alloy containing 25% LPSO with different extrusion ratios monitored by neutron diffraction

Harjo, S.; Aizawa, Kazuya; Gong, W.; Kawasaki, Takuro; Yamasaki, Michiaki*; Kawamura, Yoshihito*

no journal, , 

Oral presentation

Tensile deformation of Mg alloy containing LPSO after hot-extrusion

Harjo, S.; Aizawa, Kazuya; Gong, W.; Kawasaki, Takuro

no journal, , 

no abstracts in English

Oral presentation

Load sharing between $$alpha$$Mg and LPSO of extruded Mg$$_{97}$$Zn$$_{1}$$Y$$_{2}$$ in cyclic tension-compression

Harjo, S.; Aizawa, Kazuya; Gong, W.; Kawasaki, Takuro; Yamasaki, Michiaki*

no journal, , 

no abstracts in English

Oral presentation

Conversion from lattice strain to stress in magnesium alloy with HCP structure

Harjo, S.; Gong, W.; Kawasaki, Takuro; Aizawa, Kazuya

no journal, , 

no abstracts in English

Oral presentation

Monitoring of strengthening of LPSO in $$alpha$$Mg/LPSO dual phase alloy by hot-extrusion using in situ neutron diffraction during deformation

Harjo, S.; Aizawa, Kazuya; Gong, W.; Kawasaki, Takuro; Yamasaki, Michiaki*

no journal, , 

18 (Records 1-18 displayed on this page)
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