Cost-affordable, high-performance Ti-TiB composite for selective laser melting additive manufacturing

Dong，Yangping1,2; Li，Yulong1; Ebel，Thomas3; Yan，Ming2

2019

10.1557/jmr.2019.389

JOURNAL OF MATERIALS RESEARCH   影响因子和分区

0884-2914

2044-5326

Titanium and its alloys are probably the most suitable materials for selective laser melting (SLM) additive manufacturing to process. However, the high cost of raw powder materials limits the industrial application of as-printed Ti products. In this study, we have formulated a cost-affordable Ti-TiB composite powder for SLM, to simultaneously achieve excellent mechanical performance and cost effectiveness. The optimization of the processing parameters will be shown to lead to high relative density (99.3%) for the as-printed Ti-TiB composites containing (0.5, 1, and 2 wt%) TiB. Furthermore, by incorporating TiB, the as-printed composites exhibit much improved fracture strength (up to 1813 MPa) and microhardness (up to 412 HV), among which the Ti-0.5 wt% TiB has demonstrated a great combination of strength (1007 and 1646 MPa as yield and fracture strengths, respectively) and tensile ductility (∼8%). The solidification pathway for the Ti-TiB composite during SLM has been investigated, and the underlying mechanism for achieving high yield strength is discussed based on existing models for shear-lag strengthening, grain refinement, and dispersion strengthening.

additives composite Ti

SCI ; EI

英语

其他

Academic and Technical Leaders Founding Project of Major Disciplines of Jiangxi Province[20182BCB22001] ; Shenzhen Science and Technology Innovation Commission[ZDSYS201703031748354] ; Natural Science Foundation of Guangdong Province[2016A030313756]

Materials Science

Materials Science, Multidisciplinary

WOS:000559341900004

CAMBRIDGE UNIV PRESS

20200308047732

Grain refinement ; Melting ; Selective laser melting ; Titanium alloys ; Fracture toughness ; Cost effectiveness

Titanium and Alloys:542.3 ; Reproduction, Copying:745.2 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Industrial Economics:911.2

MATERIALS SCIENCE

2-s2.0-85077862716

Scopus

1.Key Lab for Robot and Welding Automation of Jiangxi Province,Mechanical and Electrical Engineering School,Nanchang University,Nanchang,330031,China
2.Department of Materials Science and Engineering,Shenzhen Key Lab for Additive Manufacturing of High-performance Materials,Southern University of Science and Technology,Shenzhen,518055,China
3.Institute of Material Research,Helmholtz-Zentrum Geesthacht,Geesthacht,21502,Germany

Dong，Yangping,Li，Yulong,Ebel，Thomas,et al. Cost-affordable, high-performance Ti-TiB composite for selective laser melting additive manufacturing[J]. JOURNAL OF MATERIALS RESEARCH,2019,35(15):1922-1935.

Dong，Yangping,Li，Yulong,Ebel，Thomas,&Yan，Ming.(2019).Cost-affordable, high-performance Ti-TiB composite for selective laser melting additive manufacturing.JOURNAL OF MATERIALS RESEARCH,35(15),1922-1935.

Dong，Yangping,et al."Cost-affordable, high-performance Ti-TiB composite for selective laser melting additive manufacturing".JOURNAL OF MATERIALS RESEARCH 35.15(2019):1922-1935.