2013 Fiscal Year Final Research Report
Synthesis of Ultra-High Strength and High Toughness Next-Generation Metallic Structure Materials with Nano Structure and Research of the Deformation and Strengthening Mechanisms
| Project/Area Number |
22246015
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Materials/Mechanics of materials
|
|---|
| Research Institution | Ube National College of Technology |
|---|
Principal Investigator |
FUJITA Kazutaka 宇部工業高等専門学校, 機械工学科, 教授 (10156862)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
YAMASAKI Tohru 兵庫県立大学, 大学院工学研究科, 教授 (30137252)
TOKUNAGA Hitoo 宇部工業高等専門学校, 機械工学科, 準教授 (70435460)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
WATANABE Dai 宇部工業高等専門学校, 機械工学科, 準教授 (60535912)
|
|---|
| Project Period (FY) |
2010-04-01 – 2014-03-31
|
| Keywords | 金属ガラス / ナノ結晶合金 / アモルファス合金 / 引張塑性変形 / 加工硬化 / 靭性 / 熱的構造安定性 / フラクトグラフィ |
|---|
| Research Abstract |
On the metallic glassy alloy (MGA) and nanocrystalline alloy (NCA) which show ultra-high strength, the high ductility together with the ultra-high strength were intended. In addition, the deformation and strengthening mechanisms were investigated.
The MGA, that the supercooled liquid viscosity shows more than 10 8 Pa sec and the nano-quasicrystals precipitate in the supercooled liquid, showed work hardening with about 0.3% plastic strain and successively work softening accompanied by clear serrations with about 0.7% plastic strain without decreasing the tensile strength. The NCA showed that tensile strengths in the composition of the Ni 14-18 at.% W were achieved to about 3 GPa with the total strains of 3-5% containing the large plastic strain of about 0.5-3 % by the specimen surface roughness controlled by the Cu-substrate roughness.
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Torsion Behavior in Zr-based Bulk Metallic Glass2014
Author(s)
Kazutaka Fujita, Makoto Fujishige, Akira Hirata, Hiroyuki Nishikawa and Yoshihiko Yokoyama and Hidemi Kato
Organizer
Abstracts of The 10th International Conference on Bulk Metallic Glasses
Place of Presentation
Shanghai University, Shanghai, China
Year and Date
20140601-05
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] ナノ結晶およびアモルファス Ni-W 合金の引張特性2011
Author(s)
長岡健太(学)、 水津泰士(学)、 藤田和孝、高島佐衣、鍋島隆行、山崎徹
Organizer
日本金属学会2011年秋期大会講演概要
Place of Presentation
沖縄コンベンションセンターおよびカルチャーリゾートフェストーネ, 沖縄コンベンションセンターおよびカルチャーリゾートフェストーネ
Year and Date
20111107-09
-
-
-
-
-
-
-
-
-
-
-
-
