Jiangxi University of Science and Technology

Guorui Scientific Innovation Rare Earth Functional

Liang Qi

Weihao Cai

Zhigang Wang

Xuwei Liu

Jieyun Ye

Hebin Wang

Chao Liu

Hongjin Zhao

Jiqiang Chen

Qilong Li

The present disclosure provides rare earth die steel. Mg and B elements are added on the basis of adding rare earth element Y, so that the rare earth element purifies a matrix, and grain boundary occupation by Mg and B is fully utilized to regulate grain network chromium carbides. In addition, the B element can fully improve hardenability of austenite and ensure that non-martensite such as bainite does not appear during the cooling process, and therefore rare earth die steel with high impact toughness and high isotropy is obtained.

Rare earth die steel and preparation method thereof

The present invention relates to the technical field of manufacturing of metal materials, and in particular to a 7000-series aluminum alloy wire for additive manufacturing and a preparation method thereof. The wire was prepared by subjecting an Al&#x2014;Ti&#x2014;B intermediate alloy containing TiBparticles generated in situ to severe plastic deformation to obtain an intermediate alloy containing TiBnanoparticles having a particle size of 50-1,000 nm or a mixture of two different particles; using the intermediate alloy containing TiBnanoparticles as a matrix raw material, adding other metal or intermediate alloy for smelting to obtain an alloy melt; preparing a wire blank with the alloy melt; subjecting the wire blank to hot rolling, drawing, intermediate annealing and surface treatment to obtain an Al&#x2014;Zn&#x2014;Mg&#x2014;Cu alloy wire reinforced by particles at nano scale or submicron scale.

7000-series aluminum alloy wire for additive manufacturing and preparation method thereof

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Ganzhou, China

Liang Qi