Development of high tensile strength and high electrical conductivity hydride Cu-Ti alloy wire for non-destructive 100 T

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656059
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Applied physics, general
• Research Institution: Tohoku University
• Principal Investigator: NARUMI Yasuo 東北大学, 金属材料研究所, 准教授 (50360615)
• Co-Investigator(Renkei-kenkyūsha): SEMBOSHI Satoshi 東北大学, 金属材料研究所, 特任准教授 (00364026)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 強磁場 / 銅チタン合金 / 水素化

Outline of Final Research Achievements

High tensile strength and high electrical conductivity Cu-Ti alloy wire has been developed to produce magnetic fields of 100 T using a non-destructive pulse magnet. From a vacuum melted ingot with composition of Cu-3.2wt%Ti, Cu-Ti wire with a cross section of 2mm×3mm has been obtained by a cold draw bench. Moreover, in order to recover fracture toughness and electrical conductivity, additional 2 stages heat treatments using a salt bath were applied to the wire. As a result, specifications of Vickers hardness Hv310 and the conductivity of 17%IACS have been achieved. The hardness is higher than that of a standard Cu-Ag alloy wire for practical use. Utility of the new Cu-Ti alloy wire will be examined by forming a pulse magnet coil.

Free Research Field

強磁場物性