In situ synthesis of TiC reinforced Cu_(47)Ti_(34)Zr_(11)Ni_8 bulk metallic glass composites  

作　　者：SUNYufeng ZHANGGuosheng WEIBingchen LIWeihuo WANGYuren 

机构地区：[1]NationalMicrogravityLab.InstituteofMechanics.ChineseAcademyofSciences(CAS),Beijing100080.China [2]BeijingInstituteofPharmaceuticalChemistry,Beijing102205.China

出　　处：《Chinese Science Bulletin》2004年第6期542-546,共5页

摘　　要：In situ Synthesized TiC particles and β-Ti dendrites reinforced Cu47Ti34Zr11Ni8 bulk metallic glass (BMG) composite ingots were preapared by the suction cast-ing method. The ingots with diameters from 1 up to 4 mm were successfully obtained. It was shown that introducing TiC micro-sized particles into the amorphous matrix did not [(disturb the glass )(f)(orming ability \(GFA\) of the matrix, while)] the yield strength and ductility could be well improved. The phase constitution, microstructure and elements distribution in the composites were studied by OM,XRD,SEM and EDS. It was shown that the in situ synthesized TiC particles acting as heterogeneous nulcleation sites promoted the precipitation of β-Ti dendrites, resulting in the formation of the TiC par-ticles and β-Ti dendrites co-reinforced BMG composites. [(The compressive tests were employed to )(p)(robe the yield)] strength and ductility of BMG composites.In situ Synthesized TiC particles and β-Ti dendrites reinforced Cu47Ti34Zr11Ni8 bulk metallic glass (BMG) composite ingots were preapared by the suction cast-ing method. The ingots with diameters from 1 up to 4 mm were successfully obtained. It was shown that introducing TiC micro-sized particles into the amorphous matrix did not [(disturb the glass )(f)(orming ability \(GFA\) of the matrix, while)] the yield strength and ductility could be well improved. The phase constitution, microstructure and elements distribution in the composites were studied by OM,XRD,SEM and EDS. It was shown that the in situ synthesized TiC particles acting as heterogeneous nulcleation sites promoted the precipitation of β-Ti dendrites, resulting in the formation of the TiC par-ticles and β-Ti dendrites co-reinforced BMG composites. [(The compressive tests were employed to )(p)(robe the yield)] strength and ductility of BMG composites.

关 键 词：位置合成 碳化钛 块状金属玻璃 延展性 生长强度 加固 剪切带 

分 类 号：TQ171.6[化学工程—玻璃工业]