半固态等温处理Ti48Zr18V12Cu5Be17非晶合金的显微组织演变

中国有色金属学报, 2016, 26(10): 2110-2117.

半固态等温处理Ti48Zr18V12Cu5Be17非晶合金的显微组织演变

郭洪民 ^1, , 王程 ^2, , 温飞马 ^3, , 杨湘杰 ^4, , 章爱生 ^5,

1.南昌大学材料科学与工程学院,南昌330031;南昌大学江西省高性能精确成形重点实验室,南昌330031

2.南昌大学材料科学与工程学院,南昌,330031

3.南昌大学材料科学与工程学院,南昌,330031

4.南昌大学江西省高性能精确成形重点实验室,南昌,330031

5.南昌大学江西省高性能精确成形重点实验室,南昌,330031

基金项目: 江西省青年科学家资助计划资助项目(20122BCB23001) Project(20133ACB21003) supported by the Key Nature Science Foundation of Jiangxi Province,China Project (20122BCB23001) supported the Jiangxi Province Young Scientists Cultivating Programs,China 江西省自然科学基金重点项目(20133ACB21003) Project (212091) supported by the Key Foundation of Science and Technology of Ministry of Education,China 国家自然科学基金资助项目(11364031) 教育部科技重点项目(212091)Project(11364031) supported by the National Nature Science Foundation of China

关键词：非晶基复合材料 , 半固态 , 水冷铜模 , 显微组织

Microstructure evolution of Ti48Zr18V12Cu5Be17 bulk metallic glass matrix composite during isothermal holding at semi-solid stage

Keywords： metallic glass matrix composite , semi-solid state , copper mould suction , microstructure

采用水冷铜模吸铸法制备内生β-Ti晶体相增塑Ti48Zr18V12Cu5Be17块体非晶复合材料,研究该材料在半固态温度区间的显微组织演变及其动力学.结果表明:水冷铜模吸铸的铸态组织和半固态等温处理后的水淬组织均由β-Ti晶体相和基体非晶相组成.半固态等温处理温度和保温时间决定着β-Ti相的最终形态,提高等温处理温度将提高β-Ti相的演变速度.β-Ti相晶粒尺寸D3和保温时间t存在线性关系,生长动力学因子K=3.6 μm3/s,β-Ti相的球化过程是由溶质元素扩散控制的粗化行为.

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