Influence of titanium carbide and titanium diboride on microstructure and mechanical properties of laser metal deposition nickel-titanium alloys
Einfluss von Titankarbid und Titandiborid auf Gefüge und mechanische Eigenschaften von durch Laserstrahl-Metallabscheidung hergestellten Nickel-Titan-Legierungen
L. Deng, K. Zhang, M. Lin, C. Huang, H. Z. Huang, H. Wang, Z. Zhan, X. Chang, J. Tu, Z. Zhou
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引用次数: 0
Abstract
Nickel-titanium alloys are produced via laser metal deposition using titanium carbide and titanium diboride as nucleating agents to refine the grain structure. The optimal process parameters are determined by analyzing the quality of the alloy formation. X-ray diffraction confirms the simultaneous presence of the B19′ martensitic phase and B2 austenitic phase in the nickel-titanium alloy fabricated by laser metal deposition. Tensile testing is performed on the samples at room temperature. The results show that adding mass fractions 0.9 % titanium carbide and titanium diboride effectively refines the grain size of the nickel-titanium alloy fabricated by laser metal deposition, leading to improved tensile properties. Specifically, the addition increases the tensile strength by 40 % and 70 %, and the elongation by 50 % and 60 %.
期刊介绍:
Materialwissenschaft und Werkstofftechnik provides fundamental and practical information for those concerned with materials development, manufacture, and testing.
Both technical and economic aspects are taken into consideration in order to facilitate choice of the material that best suits the purpose at hand. Review articles summarize new developments and offer fresh insight into the various aspects of the discipline.
Recent results regarding material selection, use and testing are described in original articles, which also deal with failure treatment and investigation. Abstracts of new publications from other journals as well as lectures presented at meetings and reports about forthcoming events round off the journal.