评述了硼(B)在RuAl金属间化合物中的强化和韧化作用.含αRu+ RuAl共晶组织的亚共晶Ru-Al合金具有优良的高温性能和室温韧性.B是RuAl金属间化合物的强化和韧化元素,当Ru53Al47合金中加入0.5at％B时,最大压缩真应变由0.17增加到0.34,最大压缩真应力由1.3GPa增加到3.0GPa.B在RuAl金属间化合物中起固溶强化作用,并通过改善位错滑移带分布及促进位错运动对RuAl金属间化合物产生韧化作用.当B含量超过0.5at％时,B对Ru-Al合金的韧化作用降低.
参考文献
| [1] | Ira M W;Patricia J H .Platinum metal-based intermetallics for high-temperature service[J].Platinum Metals Review,2000,44(04):158-166. |
| [2] | Fleischer R L .Intermetallic compounds for high-temperature structural use[J].Platinum Metals Review,1992,36(03):138-145. |
| [3] | Mücklich F;Ilié N .RuAl and its alloys.Part Ⅰ.Structure,physical properties,microstructure and processing[J].Intermetallics,2005,13:5-21. |
| [4] | 天津人民广播电台科技组.元素世界[M].天津:南开大学出版社,1984:73-75. |
| [5] | Hirokazu Tsuji;Tatsuhiko Tanabe;Hajime Nakajima .Creep rupture properties under varying load/temperature conditions on a nickel-base heat-resistant alloy strengthened by boron addition[J].Journal of Nuclear Materials,1994,208(1/2):111-118. |
| [6] | Fleisher L;Fleld R D;Briant C L .Mechanical properties of high-temperature alloys of AlRu[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1991,22A(02):403-414. |
| [7] | Ilic N.;Rein R.;Goken M.;Kempf M.;Soldera F.;Mucklich F. .Properties of eutectic Ru-Al alloy produced by ingot metallurgy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(0):38-44. |
| [8] | Fleischer R L;McKee D W .Mechanical and oxidation properties of AlRu-based high-temperature alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1993,24A(03):759-763. |
| [9] | Fleischer R L .Boron and off-stoichiometry effects on the strength and ductility of AlRu[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1993,24A(01):227-230. |
| [10] | Fieischer R L .Substitutional solutes in AlRu—Ⅰ.Effects of solute on moduli,lattice parameters and vacancy production[J].Acta Metallurgica Et Materialia,1993,41(03):836-869. |
| [11] | Fieischer R L .Substitutional solutes in AlRu—Ⅱ.Hardening and correlations with defect structure[J].Acta Metallurgica Et Materialia,1993,41(04):1197-1205. |
| [12] | R. L. Fleischer .The distribution of boron in AlRu: Effect on ductility and toughness[J].Acta materialia,2005(9):2623-2627. |
| [13] | H.O. Mosca;G, Bozzolo;J.E. Garces .Site preference, size effects and segregation in RuAlB alloys[J].Scripta materialia,2008(11):1025-1028. |
| [14] | Lu D .The dislocation substructures and mechanical properties of RuAl-based intermetallic compounds[D].Pittsburgh,PA,USA:Carnegie-Mellon University,2000. |
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