Microstructure design and control of intermetallics
Microstructure design and control of intermetallics
批准号:
04239101
负责人:
HANADA Shuji
金额:
$89.79万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
财政年份:
1992
资助国家:
日本
项目状态:
已结题
起止时间:
1992 至 1994
中文摘要
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英文摘要
1. Microstructure control of Ni_3Al polycrystalsMicrostructures of Ni_3Al ternary alloys were controlled to consist of equiaxd, recrystallized grains by isothermal forging under appropriate deformation conditions and ductility at room temperature was investigated. Ductilities of Ni_3Al alloyed with ternary elements of more than 2% are explained by ordering energy, and ductilization of Ni_3Al microalloyed with Zr or Hf is ascribed to scavenging of impurities. The latter conclusion is consistent with the fact that high purity Ni_3Al prepared by using zone-refined Ni and Al in a ultra-high vacuum exhibits ductility.2. Microstructure control of TiAlUtra-fine grained TiAl was obtained by mechanical alloying in H_2 followed by hot pressing or mechanical alloying in Ar followed by HIPing. Ultra-fine grained TiAl deforms under lower stress compared with coarse grained TiAl. Ultra-fine grained TiAl+Ti_3Al exhibits superplasticity and heat treatment after superplastic deformation improves high temperature strength.Compressive deformation at high temperatures products deformation texture for TiAl and for lamellar structured TiAl/Ti_3Al.Ternary additions to TiAl Produce precipitates consisting of intermetallic compounds, carbides or nitrides, thereby increasing high temperature strength.3. Microstructure control of Nb_3AlNb_3Al+Nb two phase alloys were prepared by isothermal forging of ingots, HIP consolidation of alloyed powders or reactive sintering in hot pressing. High temperature strength and fracture toughness at room temperature are improved by controlling alloy composition and microstructure.
期刊论文(56)
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W.H.Tian, C.S.Han and M.Nemoto: "Dislocation-particle interactions in precipitation strengthened Ni_3Al and NiAl" Struct.Intermet., eds.R.Darolia et al.TMS. 551 (1993)
W.H.Tian、C.S.Han 和 M.Nemoto:“沉淀中的位错-粒子相互作用增强了 Ni_3Al 和 NiAl”Struct.Intermet.,eds.R.Darolia 等人.TMS。
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H.Saka and Y.M.Zhu: "Dislocation structures in beta-brass deformed cyclically at 200゚C" Phil.Mag.A69. 1155 (1994)
H.Saka 和 Y.M.Zhu:“β 黄铜中的位错结构在 200℃ 下周期性变形”Phil.Mag.A69 (1994)。
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Y.Murayama,S.Hanada,K.Obara: "Dynamic recrystallization of Nb_3Al produced from alloy powder" Materials Science and Engineering,. A159. 173-180 (1992)
Y.Murayama,S.Hanada,K.Obara:“合金粉末制备Nb_3Al的动态再结晶”材料科学与工程,。
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K.Ameyama,H.Uno and M.Tokizane: "Superplastic behavior of Ti-48 at % Al two-phase titanium cluminide compacts made from mechanically alloyed powder" Intermetallics. 2. 315-319 (1994)
K.Ameyama,H.Uno%20and%20M.Tokizane:%20"超塑%20behavior%20of%20Ti-48%20at%20%%20Al%20two-phase%20titanium%20cluminide%20compacts%20made%20from%20mechanically%
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W.H.Tian,Z.Horita,T.Sano and M.Nemoto: "An application of the Differential X-ray Absorption Method to Thickness Measurement in Precipitate-Containing Ni_3(Al,Ti)and TiAl Compounds" Philosophical Magazine. B67. 811-822 (1993)
W.H.Tian、Z.Horita、T.Sano 和 M.Nemoto:“差示 X 射线吸收法在含沉淀物 Ni_3(Al,Ti) 和 TiAl 化合物厚度测量中的应用”哲学杂志。
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共 28 条
Processing for multi-functions・Materials development
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批准号:11221202
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项目类别:Grant-in-Aid for Scientific Research on Priority Areas (B)
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资助金额:$35.65万
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财政年份:1999
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负责人:HANADA Shuji
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依托单位:
Alloy design of cyclic hydro and dehydrogenation tolerant hydrogen storage materials
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批准号:11305048
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$26.6万
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财政年份:1999
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负责人:HANADA Shuji
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依托单位:
Harmonic Material Design of Multi-Functional Composites
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批准号:11221101
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项目类别:Grant-in-Aid for Scientific Research on Priority Areas
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资助金额:$5.82万
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财政年份:1999
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负责人:HANADA Shuji
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依托单位:
EVALUATION OF Nb SOLID SOLUTIONS AS MATRIX OF COMPOSITES FOR VERY HIGH TEMPERATURE STRUCTURAL APPLICATIONS
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批准号:08405045
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$24.13万
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财政年份:1996
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负责人:HANADA Shuji
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依托单位:
POWDER PRODUCTION BY HYDROGEN PULVERIZATION OF FUNCTIONAL INTERMETALLICS AND DEVELOPMENT OF CLOSED SYSTEM FOR POWDER CONSOLIDATION
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批准号:07555509
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$1.66万
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财政年份:1995
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负责人:HANADA Shuji
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依托单位:
Strength of Intermetallic Matrix Composites by Controlling Interface Reactions
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批准号:03452253
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项目类别:Grant-in-Aid for General Scientific Research (B)
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资助金额:$4.8万
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财政年份:1991
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负责人:HANADA Shuji
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依托单位:
国内基金
海外基金
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