Solution treatment for enhanced hardness in Mo-modified Ti2AlNb-based alloys
Solution treatment for enhanced hardness in Mo-modified Ti2AlNb-based alloys
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固溶处理提高 Mo 改性 Ti2AlNb 基合金的硬度
DOI：
10.1016/j.jallcom.2019.07.149
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发表时间：
2019-10
影响因子：
6.2
通讯作者：
Liu Yongchang
中科院分区：
文献类型：
--
作者：
Zhang Yaran;Cai Qi;Ma Zongqing;Li Chong;Yu Liming;Liu Yongchang
研究了固溶处理对Mo变质Ti2AlNb合金显微组织和显微硬度的影响。在O-B_2+O_2相区直接时效的合金中观察到典型的魏氏组织，与未添加Mo的合金相比，合金的硬度较低。在单一的B2相区处理的样品溶液中观察到排列良好的O+B_2团簇，表现出高达620 HV的良好硬度性能。除了O相的析出硬化作用外，B_2相中Mo的固溶对硬度的提高起主要作用。进一步的显微组织观察表明，在B2相晶格中Mo替代Nb主要引起(200)和(211)晶面的晶格扭曲，位错的纠缠也有助于硬度的提高。
The present work investigates the change in the microstructure and the improvement in the microhardness in the Mo-modified Ti2AlNb alloys induced by solution treatment. Typical Widmanstätten O + B2 structure was observed in the alloys directly aged in the O + B2 phase region, with a lower hardness value compared to that of the alloy without Mo addition. Well-arranged O + B2 colonies were observed in the specimen solution treated in single B2 phase region, and it exhibited a favorable hardness performance of up to 620 HV. Besides the precipitation hardening of the O phase, the solution of Mo in B2 phase should be responsible for the enhancement of hardness. Further microstructural observation proved that the substitution of Mo for Nb in the lattice of B2 phase induced the lattice distortion mainly the (200) and (211) planes, and the induced entanglement of dislocations also contributed to the enhancement of hardness.
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DOI：
10.1007/s11661-999-0240-4
发表时间：
1999-09-01
影响因子：
2.8
作者：
Boehlert, CJ;Majumdar, BS;Miracle, DB
通讯作者：
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DOI：
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发表时间：
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期刊：
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影响因子：
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DOI：
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发表时间：
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影响因子：
6.4
作者：
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影响因子：
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作者：
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