| 硬型铸造Ti-Al合金的组织与拉伸性能 |
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| 引用本文： | 李胜,骆晨,朱春雷,张继.硬型铸造Ti-Al合金的组织与拉伸性能[J].铸造,2011,60(7). |
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| 作者姓名： | 李胜 骆晨 朱春雷 张继 |
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| 作者单位： | 钢铁研究总院高温材料研究所,北京,100081 |
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| 摘 要： | 试验研究了石墨和铸钢两种硬型铸造Ti-Al合金板片状试样的缺陷、层片间距和室温拉伸性能,并与用陶瓷型壳铸造的Ti-Al合金进行对比.结果表明,采用硬型铸造Ti-Al合金在比较高的冷却速度下凝固的板片状试样无宏观和微观裂纹；与陶瓷型壳铸造的组织相比,硬型铸造Ti-Al合金的板片状试样铸态组织平均层片间距大幅度减小,其中石墨型铸造的减小了近一半；由于硬型铸造Ti-Al合金的板片状试样的层片间距的减小使得其室温拉伸强度有较大幅度的提高,其中石墨型铸造板片试样的层片问距减小了0.35 μm,屈服强度提高了40 MPa.
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| 关 键 词： | Ti-Al合金 硬型铸造 组织 层片间距 拉伸性能 |
Microstructures and Tensile Properties of Ti-Al Based Alloys by Permanent Mold Casting |
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| LI Sheng,LUO Chen,ZHU Chun-lei,ZHANG Ji.Microstructures and Tensile Properties of Ti-Al Based Alloys by Permanent Mold Casting[J].Foundry,2011,60(7). |
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| Authors: | LI Sheng LUO Chen ZHU Chun-lei ZHANG Ji |
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| Affiliation: | LI Sheng,LUO Chen,ZHU Chun-lei,ZHANG Ji(High Temperature Materials Division,China Iron and Steel Research Institute Group,Beijing 100081,China) |
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| Abstract: | The properties the casting plate were studied in this paper,such as,the casting defect,lamellar spacing and room temperature tensile properties of Ti-Al based plate by graphite mold and cast-steel mold,and were compared with the Ti-Al based plate by ceramics mold.The experimental results show that there was no macro and micro crack in these permanent mold casting plates at the higher cooling rate during the solidification;the lamellar spacing of permanent mold casting plate was greatly reduced,compared with... |
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| Keywords: | Ti-Al alloy permanent mold casting structure lamellar spacing tensile properties |
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