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| 工艺参数对铸造TiAl合金组织及性能的影响 | |
| 引用本文： | 王平怀,何洪,张继,马岳,宫声凯.工艺参数对铸造TiAl合金组织及性能的影响[J].车用发动机,2006(1):58-60. |
| 作者姓名： | 王平怀 何洪 张继 马岳 宫声凯 |
| 作者单位： | 1. 北京航空航天大学材料科学与工程学院,北京,100083 2. 中国北方发动机研究所,山西,大同,037036 3. 钢铁研究总院,北京,100081 |
| 摘 要： | 试验研究了型壳预热温度和熔炼真空度对铸造TiAl合金择优取向层片组织和性能的影响。结果表明,较低的型壳预热温度和真空度有利于板状试样中柱状晶生长,进而生成择优取向的层片组织。择优取向的层片组织在沿层片取向的拉伸载荷作用下具有较好的强度和塑性,但溶解较多O2的试样屈服强度高、塑性低。 |
| 关 键 词： | TiAl合金 铸造组织 力学性能 |
| 文章编号： | 1001-2222(2006)01-0058-03 |
| 收稿时间： | 2005-08-23 |
| 修稿时间： | 2005-11-22 |
Influence of Mould Temperature and Furnace Vacuum Level on the Microstructure and Properties of Cast TiAl |
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| WANG Ping-huai,HE Hong,ZHANG Ji,MA Yue,GONG Shen-kai.Influence of Mould Temperature and Furnace Vacuum Level on the Microstructure and Properties of Cast TiAl[J].Vehicle Engine,2006(1):58-60. | |
| Authors: | WANG Ping-huai HE Hong ZHANG Ji MA Yue GONG Shen-kai |
| Institution: | 1. Beijing University of Aeronautics and Astronautics, Beijing 100083, China; 2. China North Engine Research Institute, Datong 037036, China; 3. Central Iron and Steel Research Institute, Beijing 100081, China |
| Abstract: | It's found that the lamellar morphology and volume fraction as well as the tensile properties vary with the mould temperature and furnace vacuum.Lower mould temperature and furnace vacuum level tend to produce fully columnar crystal macrostrcture and thereafter orientational lamellar microstructures in TiAl platy samples.Better-oriented lamellar microstructures show higher tensile properties.On the other hand,the sample containing more oxygen exhibits higher yield strength but lower prolongation. |
| Keywords: | TiAl alloy cast microstructure mechanical properties |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |