Trade-off Balancing between Strength and Toughness of Multi-Phase alloys containing Brittle Phases
Trade-off Balancing between Strength and Toughness of Multi-Phase alloys containing Brittle Phases
批准号:
12305044
负责人:
MISHIMA Yoshinao
金额:
$28.26万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (A)
财政年份:
2000
资助国家:
日本
项目状态:
已结题
起止时间:
2000 至 2002
中文摘要
在韧性基体中具有脆性金属间相或脆性金属间相的合金中,已经系统地研究了强度和韧性之间的平衡。所研究的体系包括Nb-Si基合金、fe基铁素体合金、奥氏体Fe-Mn-Al-C合金、cu合金和Al-Fe合金。Nb- si合金由脆性Nb_5Si_3和韧性Nb固溶相组成,呈混合层状形貌,是燃气涡轮发动机部件等超高温应用的候选材料。合金的高温强度和室温韧性取决于层状组织的形貌和间距。本文成功地提出了一种考虑脆性基体中韧性相增韧机理的权衡性能优化方法。对以Laves相为强化剂的Fe-Cr基铁素体合金和通过析出e2_1型金属间化合物实现强化的Fe-Mn-Al-C合金也进行了类似的研究。在这两种情况下,脆性相的形态变化与晶体取向有关,两相之间的失配控制着合金的强度和韧性或延展性。本工作成功地为先进金属材料的显微组织和力学性能提供了许多有价值的基础信息,有助于设计用于各种结构应用的合金。
英文摘要
Trade-off balancing between strength and toughness has been systematically investigated in alloys having brittle an intermetallic phase in a ductile matrix or having a ductile phase within the brittle intermetallic matrix. The systems investigated include Nb-Si base alloy, Fe-base ferritic alloys, an austenitic Fe-Mn-Al-C alloys, Cu-alloys and an Al-Fe alloy. The Nb-Si alloys consist of brittle Nb_5Si_3 and a ductile Nb solid solution phase in a mixed lamellar morphology, which is a candidate material for ultra-high temperature application such as components in gas-turbine engines. Both high temperature strength and room temperature toughness of the alloy depend on the morphology and spacings of the lamellar microstructure. A method for optimization of trade-off properties has been successfully suggested with a consideration on the toughening mechanism by the ductile phase in a brittle matrix.Similar investigation was made in the Fe-Cr base ferritic alloys in which the Laves phase is the strengthening agent, and also in Fe-Mn-Al-C in which the strengthening is achieved by the precipitation of E2_1-type intermetallic compound. In both cases change in morphology of the brittle phase in relation to the crystallographic orientation and misfit between two-phases control the strength and toughness, or ductility of the alloys.The present work successfully provides many valuable basic information on the microstructure-mechanical properties of advance metallic materials that helps in designing the alloys for various structural applications.
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DOI:
10.1016/s0921-5093(02)00712-8
发表时间:
2003-06
期刊:
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
影响因子:
6.4
作者:
[N. Yoneyama;K. Mizoguchi;S. Kumai;A. Sato;M. Kiritani]
通讯作者:
N. Yoneyama;K. Mizoguchi;S. Kumai;A. Sato;M. Kiritani
DOI:
10.2320/matertrans.45.357
发表时间:
2004-02-01
期刊:
MATERIALS TRANSACTIONS
影响因子:
1.2
作者:
[Yamamoto, K, Kimura, Y, Mishima, Y]
通讯作者:
Mishima, Y
Effect of grain-boundary GeO_2 particles on intergranular fracture of Cu-GeO_2 polycrystals
晶界GeO_2颗粒对Cu-GeO_2多晶沿晶断裂的影响
DOI:
--
发表时间:
2003
期刊:
Journal of Materials Science 38
影响因子:
--
作者:
[H.SATO, T.FUJII, S.ONAKA, M.KATO]
通讯作者:
M.KATO
Compressive Mechanical Properties of Multi-phase Alloys Based on B2 CoAl and E2_1 Co_3AlC
B2 CoAl和E2_1 Co_3AlC基多相合金的压缩力学性能
DOI:
--
发表时间:
2000
期刊:
Intermetallics 8
影响因子:
--
作者:
[Y.Kimura, M.Takahashi, H.Hosoda, S.Miura, Y.Mishima]
通讯作者:
Y.Mishima
Effect of Matrix Substructures on Precipitation of the Laves Phase in Fe-Cr-Nb-Ni System
Fe-Cr-Nb-Ni体系中基体亚结构对Laves相析出的影响
DOI:
--
发表时间:
2003
期刊:
ISIJ International vol.43, No.8
影响因子:
--
作者:
[Keisuke YAMAMOTO, Yoshisato KIMURA, Yoshinao MISHIMA]
通讯作者:
Yoshinao MISHIMA
共 14 条
Solidification process control of intermetallic-based multi-phase heat resistant alloys applicable at ultra-high temperature
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批准号:15206075
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项目类别:Grant-in-Aid for Scientific Research (A)
-
资助金额:$31.53万
-
财政年份:2003
-
负责人:MISHIMA Yoshinao
-
依托单位:
Development of New Co-Base Superalloys Precipitaion Hardened by an Intermetallic Phase for Gas Turbine Application
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批准号:09555209
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$6.08万
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财政年份:1997
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负责人:MISHIMA Yoshinao
-
依托单位:
Ductility Improvement by Microstructural Control on Multiphase Intermetallic Alloys Using Phase
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批准号:08455318
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项目类别:Grant-in-Aid for Scientific Research (B)
-
资助金额:$5.5万
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财政年份:1996
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负责人:MISHIMA Yoshinao
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依托单位:
国内基金
海外基金
高性能纤维混凝土构件抗爆的强度预测
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批准号:51708391
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项目类别:青年科学基金项目
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资助金额:25.0万元
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批准年份:2017
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负责人:李杰
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依托单位: