Grain refinement mechanisms in additively manufactured nano-functionalized aluminum

被引：139

作者：

Martin, J. Hunter ^{[1
]}

Yahata, Brennan ^{[1
,2
]}

Mayer, Justin ^{[1
]}

Mone, Robert ^{[1
]}

Stonkevitch, Ekaterina ^{[1
]}

Miller, Julie ^{[1
]}

O'Masta, Mark R. ^{[1
]}

Schaedler, Tobias ^{[1
]}

Hundley, Jacob ^{[1
]}

Callahan, Patrick ^{[3
]}

Pollock, Tresa ^{[2
]}

机构：

[1] HRL Labs LLC, 3011 Malibu Canyon Rd, Malibu, CA 90265 USA

[2] Univ Calif Santa Barbara, Mat Dept, Santa Barbara, CA USA

[3] US Naval Res Lab, Mat Sci & Technol Div, 4555 Overlook Ave SW, Washington, DC 20375 USA

来源：

ACTA MATERIALIA | 2020年 / 200卷

基金：

美国国家科学基金会;

关键词：

Grain refinement; Additive manufacturing; Solidification; Nucleation; Crystallography; PART I; HETEROGENEOUS NUCLEATION; AL; ALLOYS; MICROSTRUCTURE; MODEL; ORIENTATION; STRENGTH; COLUMNAR; POTENCY;

D O I：

10.1016/j.actamat.2020.09.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Additive manufacturing (AM) is a new and promising production methodology adept at producing complex geometries, which can be optimized for lower weight and enhanced capabilities. The material properties of these additive components are dictated by the microstructures developed during processing, with a high sensitivity to grain structure and associated anisotropy. With this new processing modality comes the added difficulty of understanding the thermodynamics and kinetic mechanisms that dictate the evolution of microstructure. This research addresses the unique thermal conditions present in AM and the pathways for grain refinement in nanofunctionalized aluminum alloys. The Al-Ta system, in which Al3Ta intermetallic compounds are demonstrated to have substantial grain refining capacity, are the focus of this study. The grain size is shown to be reduced relative to pure aluminum by 1000X when tantalum is added at 1 von. The effectiveness of the Al3Ta intermetallic is dictated by the crystallography and availability of the inoculant phase under AM conditions. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1022 / 1037

页数：16

共 70 条

[1]

A.M.T. Ltd, 2020, MAT DAT SHEET A205 F

[2]

AP Works, 2016, MAT DAT SHEET SCALM

[3] Additive manufacturing of Ni-based superalloys: The outstanding issues [J].

Attallah, Moataz M. ;

Jennings, Rachel ;

Wang, Xiqian ;

Carter, Luke N. .

MRS BULLETIN, 2016, 41 (10) :758-764

[4] Epitaxy and Microstructure Evolution in Metal Additive Manufacturing [J].

Basak, Amrita ;

Das, Suman .

ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 46, 2016, 46 :125-149

[5]

Beuth J., 2013, 24 INT SFF S ADD MAN, P655, DOI [DOI 10.26153/TSW/15590, DOI 10.1017/CBO9781107415324.004]

[6] EFFECT OF CARBIDE AND NITRIDE ADDITIONS ON HETEROGENEOUS NUCLEATION BEHAVIOR OF LIQUID IRON [J].

BRAMFITT, BL .

METALLURGICAL TRANSACTIONS, 1970, 1 (07) :1987-&

[7] Grain refinement by Al-Ti-B alloys in aluminium melts: a study of the mechanisms of poisoning by zirconium [J].

Bunn, AM ;

Schumacher, P ;

Kearns, MA ;

Boothroyd, CB ;

Greer, AL .

MATERIALS SCIENCE AND TECHNOLOGY, 1999, 15 (10) :1115-1123

[8] Dynamical Electron Backscatter Diffraction Patterns. Part I: Pattern Simulations [J].

Callahan, Patrick G. ;

De Graef, Marc .

MICROSCOPY AND MICROANALYSIS, 2013, 19 (05) :1255-1265

[9] Grain refinement of laser remelted Al-7Si and 6061 aluminium alloys with Tibor® and scandium additions [J].

Carluccio, D. ;

Bermingham, M. J. ;

Zhang, Y. ;

StJohn, D. H. ;

Yang, K. ;

Rometsch, P. A. ;

Wu, X. ;

Dargusch, M. S. .

JOURNAL OF MANUFACTURING PROCESSES, 2018, 35 :715-720

[10]

Croteau J.R., 2018, ACTA MAT, DOI [10.1016/j.dyepig.2015.02.007., DOI 10.1016/J.DYEPIG.2015.02.007]

← 1 2 3 4 5 6 7 →