CAJ | 학술논문

加入Ce部分取代Al84Ni10Zr6合金中的Zr，用单辊旋淬法制备Al84Ni10Zr6-xCex(x=0～6，%)合金，利用X射线衍射、差示扫描量热和纳米压痕等试验分析方法研究Ce取代Zr对Al84Ni10Zr6合金的非晶形成能力及力学性能的影响。结果表明，用Ce代Zr可有效抑制α-Al、Al3Ni等初生晶体的形成，提高合金的非晶形成能力、显微硬度和弹性模量。x=0时，Al84Ni10Zr6合金具有完全晶体结构，显微硬度和弹性模量都较低。x=1～5时，合金具有晶体+非晶复合结构，增加Ce含量，则初生晶体相减少，合金的显微硬度和弹性模量提高。x=6时，Al84Ni10Ce6合金具有完全非晶态结构，显微硬度和弹性模量最高，分别达到4.29和94.99 GPa。x≥3时，合金出现明显的玻璃转变现象，过冷液相区ΔTx为11～16 K，约化玻璃转变温度Trg为0.46～0.48。
가입Ce부분취대Al84Ni10Zr6합금중적Zr，용단곤선쉬법제비Al84Ni10Zr6-xCex(x=0～6，%)합금，이용X사선연사、차시소묘량열화납미압흔등시험분석방법연구Ce취대Zr대Al84Ni10Zr6합금적비정형성능력급역학성능적영향。결과표명，용Ce대Zr가유효억제α-Al、Al3Ni등초생정체적형성，제고합금적비정형성능력、현미경도화탄성모량。x=0시，Al84Ni10Zr6합금구유완전정체결구，현미경도화탄성모량도교저。x=1～5시，합금구유정체+비정복합결구，증가Ce함량，칙초생정체상감소，합금적현미경도화탄성모량제고。x=6시，Al84Ni10Ce6합금구유완전비정태결구，현미경도화탄성모량최고，분별체도4.29화94.99 GPa。x≥3시，합금출현명현적파리전변현상，과랭액상구ΔTx위11～16 K，약화파리전변온도Trg위0.46～0.48。
The Ce was substituted for Zr to produce the Al84Ni10Zr6-xCex(x=0~6, at%) alloy ribbons with using single roller melt-spinning at a wheel speed of 30 m/s. The effect of Ce on the glass-forming ability (GFA) and mechanical properties were investigated by using X-ray diffraction (XRD), differential scanning calorimetry (DSC), and nanoindentation, etc. The results show that Ce can effectively suppress the formation of primary crystallines (such as α-Al and Al3Ni) in melt-spinning of the Al84Ni10Zr6-xCex(x=0~6, at%) alloys, and enhance their GFA. The microhardness HV and elastic modulus E increased with increasing Ce contents in the Al84Ni10Zr6-xCex(x=0~6, at%) alloy ribbons. Al84Ni10Zr6 ribbon has a full polycrystalline structure with low microhardness and elastic modulus. The crystalline+amorphous structures of the x=1~5 alloy ribbons were obtained, and their amorphous proportion, microhardness HV and elastic modulus E all increased with the Ce content. A fully amorphous structurewas obtained in Al84Ni10Ce6 ribbons, which has the highest microhardness of 4.29 GPa and elastic modulus of 94.99 GPa. The evident glass transition was observed in the Al84Ni10Zr6-xCex(x=0~6,at%) alloy ribbons for x≥3 , and their supercooled liquid regionsΔTx and reduced glass transition temperatures Trg are 11~16 K and 0.46~0.48, respectively.