Characterizing solute hydrogen and hydrides in pure and alloyed titanium at the atomic scale

被引：90

作者：

Chang, Yanhong ^{[1
]}

Breen, Andrew J. ^{[1
]}

Tarzimoghadam, Zahra ^{[1
]}

Kuernsteiner, Philipp ^{[1
]}

Gardner, Hazel ^{[2
]}

Ackerman, Abigail ^{[3
]}

Radecka, Anna ^{[4
]}

Bagot, Paul A. J. ^{[2
]}

Lu, Wenjun ^{[1
]}

Li, Tong ^{[1
,5
,6
]}

Jaegle, Eric A. ^{[1
]}

Herbig, Michael ^{[1
]}

Stephenson, Leigh T. ^{[1
]}

Moody, Michael P. ^{[2
]}

Rugg, David ^{[4
]}

Dye, David ^{[3
]}

Ponge, Dirk ^{[1
]}

Raabe, Dierk ^{[1
]}

Gault, Baptiste ^{[1
]}

机构：

[1] Max Planck Inst Eisenforsch GmbH, Max Planck Str 1, D-40237 Dusseldorf, Germany

[2] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England

[3] Imperial Coll, Royal Sch Mines, Dept Mat, Prince Consort Rd, London SW7 2BP, England

[4] Rolls Royce PLC, POB 31, Derby, England

[5] Ruhr Univ Bochum, Fak Maschinenbau, Inst Werkstoffe, Bochum, Germany

[6] Ruhr Univ Bochum, ZGH, Bochum, Germany

来源：

ACTA MATERIALIA | 2018年 / 150卷

基金：

英国工程与自然科学研究理事会;

关键词：

Ti-alloys; Hydrogen; Stable hydrides; Atom probe tomography; FIELD-EVAPORATED IONS; ALPHA-BETA TITANIUM; PROBE TOMOGRAPHY; ELECTRON-MICROSCOPY; POST-IONIZATION; EMBRITTLEMENT; FRACTURE; PRECIPITATION; MARTENSITE; MECHANISMS;

D O I：

10.1016/j.actamat.2018.02.064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ti and its alloys have a high affinity for hydrogen and are typical hydride formers. Ti-hydride are brittle phases which probably cause premature failure of Ti-alloys. Here, we used atom probe tomography and electron microscopy to investigate the hydrogen distribution in a set of specimens of commercially pure Ti, model and commercial Ti-alloys. Although likely partly introduced during specimen preparation with the focused-ion beam, we show formation of Ti-hydrides along alpha grain boundaries and alpha/beta phase boundaries in commercial pure Ti and alpha+beta binary model alloys. No hydrides are observed in the alpha phase in alloys with Al addition or quenched-in Mo supersaturation. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：273 / 280

页数：8

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