CAJ | 학술논문

通过金相显微镜、X 射线衍射仪、扫描电镜(能谱仪)、压力实验机等设备研究了固溶温度对 Fe54 Ni32 Al12．5 Ta1．5合金伪弹性和硬度的影响.结果表明,固溶温度主要对合金晶粒大小和β相析出量两方面产生影响,改变固溶温度,合金伪弹性和硬度受晶粒大小和β相析出量的双重控制.综合伪弹性曲线和硬度测试结果可见,随着固溶温度升高,时效态合金的抗压强度、可恢复应变和洛氏硬度都先增大后减小,残余应变先减小后增大,固溶温度为1423 K 时,合金的抗压强度最大,达到1985．7 MPa,此时合金的可恢复应变也最大,达到15．12％,合金的硬度为最大值,达到58．9 HRC.继续升高固溶温度,合金出现局部过烧,降低了合金的伪弹性性能及硬度.
통과금상현미경、X 사선연사의、소묘전경(능보의)、압력실험궤등설비연구료고용온도대 Fe54 Ni32 Al12．5 Ta1．5합금위탄성화경도적영향.결과표명,고용온도주요대합금정립대소화β상석출량량방면산생영향,개변고용온도,합금위탄성화경도수정립대소화β상석출량적쌍중공제.종합위탄성곡선화경도측시결과가견,수착고용온도승고,시효태합금적항압강도、가회복응변화락씨경도도선증대후감소,잔여응변선감소후증대,고용온도위1423 K 시,합금적항압강도최대,체도1985．7 MPa,차시합금적가회복응변야최대,체도15．12％,합금적경도위최대치,체도58．9 HRC.계속승고고용온도,합금출현국부과소,강저료합금적위탄성성능급경도.
The effects of solution temperature on pseudo elasticity and hardness of Fe54 Ni32 Al1 2 .5 Ta1 .5 memory al-loy are studied by metallurgical microscope,X-ray diffraction,SEM (EDS)and compression test machine.The results show that solution temperature impacts on grain size and the amount of β-phase.The comprehensive analysis of pseudo elasticity curve and hardness results,show that as the solution temperature increase,the compressive strength,recoverable strain and hardness increase first and then decrease,the residual strain de-creases first and then increases.When the solution temperature was 1 423 K,the alloy compressive strength was the maximum,up to 1 985.7 MPa,the alloy recoverable deformation was the maximum,reaching 15.12%,the hardness of the alloy was also the largest,reaching to 58.9 HRC.But the alloy residual strain was relative mini-mum.When solution temperature continues to rise,the pseudo elastic property and hardness of the alloy are in-fluenced by burnt structure.