TY - JOUR
T1 - Scaling up of High-Pressure Sliding (HPS) for Grain Refinement and Superplasticity
AU - Takizawa, Yoichi
AU - Masuda, Takahiro
AU - Fujimitsu, Kazushige
AU - Kajita, Takahiro
AU - Watanabe, Kyohei
AU - Yumoto, Manabu
AU - Otagiri, Yoshiharu
AU - Horita, Zenji
N1 - Funding Information:
We are grateful to Mr. Yuta Fukushima of Kyushu University for his assistance in TEM observation of the F1295 alloy. This work was supported in part by subsidies for promoting manufacturing technology of small and medium enterprises from the METI, Japan, in part by the Light Metals Educational Foundation of Japan, in part by a Grant-in-Aid for Scientific Research (S) from the MEXT, Japan (No. 26220909), and in part by a Grant-in-Aid for Challenging Exploratory Research from the MEXT, Japan (No. 15K14183). The HPS process was carried out in the International Research Center on Giant Straining for Advanced Materials (IRC-GSAM) at Kyushu University.
Publisher Copyright:
© 2016, The Minerals, Metals & Materials Society and ASM International.
PY - 2016/9/1
Y1 - 2016/9/1
N2 - The process of high-pressure sliding (HPS) is a method of severe plastic deformation developed recently for grain refinement of metallic materials under high pressure. The sample for HPS is used with a form of sheet or rod. In this study, an HPS facility with capacities of 500 tonnes for vertical pressing and of 500 and 300 tonnes for horizontal forward and backward pressings, respectively, was newly built and applied for grain refinement of a Mg alloy as AZ61, Al alloys such as Al-Mg-Sc, A2024 and A7075 alloys, a Ti alloy as ASTM-F1295, and a Ni-based superalloy as Inconel 718. Sheet samples with dimensions of 10 to 30 mm width, 100 mm length, and 1 mm thickness were processed at room temperature and ultrafine grains with sizes of ~200 to 300 nm were successfully produced in the alloys. Tensile testing at elevated temperatures confirmed the advent of superplasticity with total elongations of more than 400 pct in all the alloys. It is demonstrated that the HPS can make all the alloys superplastic through processing at room temperature with a form of rectangular sheets.
AB - The process of high-pressure sliding (HPS) is a method of severe plastic deformation developed recently for grain refinement of metallic materials under high pressure. The sample for HPS is used with a form of sheet or rod. In this study, an HPS facility with capacities of 500 tonnes for vertical pressing and of 500 and 300 tonnes for horizontal forward and backward pressings, respectively, was newly built and applied for grain refinement of a Mg alloy as AZ61, Al alloys such as Al-Mg-Sc, A2024 and A7075 alloys, a Ti alloy as ASTM-F1295, and a Ni-based superalloy as Inconel 718. Sheet samples with dimensions of 10 to 30 mm width, 100 mm length, and 1 mm thickness were processed at room temperature and ultrafine grains with sizes of ~200 to 300 nm were successfully produced in the alloys. Tensile testing at elevated temperatures confirmed the advent of superplasticity with total elongations of more than 400 pct in all the alloys. It is demonstrated that the HPS can make all the alloys superplastic through processing at room temperature with a form of rectangular sheets.
UR - http://www.scopus.com/inward/record.url?scp=84976468253&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84976468253&partnerID=8YFLogxK
U2 - 10.1007/s11661-016-3623-3
DO - 10.1007/s11661-016-3623-3
M3 - Article
AN - SCOPUS:84976468253
SN - 1073-5623
VL - 47
SP - 4669
EP - 4681
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 9
ER -