有色金属
有色金屬
유색금속
NONFERROUS METALS
2003年
3期
5-9
,共5页
材料科学基础%Ti50Ni40Cu10%DSC%相变潜热%相变热滞%热处理工艺%相变热循环
材料科學基礎%Ti50Ni40Cu10%DSC%相變潛熱%相變熱滯%熱處理工藝%相變熱循環
재료과학기출%Ti50Ni40Cu10%DSC%상변잠열%상변열체%열처리공예%상변열순배
material science foundation%Ti50Ni40Cu10%DSC%transformation latent heat%transformation hysteresis%heat treatment%thermal cycling
制备Ti50Ni40Cu10合金,并采用示差扫描量热仪(DSC)系统分析Ti50Ni40Cu10合金在不同热处理条件下,马氏体相变规律与相变热循环间的关系.结果表明,马氏体相变潜热△HB2→B19和逆马氏体相变潜热△HB19→B2随固溶温度的升高而明显降低,随退火温度的升高略微降低.相变热滞、逆马氏体相变温度在热循环初期迅速降低,当热循环次数超过2次时则均保持不变.逆马氏体相变潜热(△HB19→B2和△HB19'→B19)随热循环次数(n＜4)的增加有所升高,特别是△HB19'→B19增加约48%.而热循环次数对马氏体相变温度和潜热△HB2→B19的影响则不明显.
製備Ti50Ni40Cu10閤金,併採用示差掃描量熱儀(DSC)繫統分析Ti50Ni40Cu10閤金在不同熱處理條件下,馬氏體相變規律與相變熱循環間的關繫.結果錶明,馬氏體相變潛熱△HB2→B19和逆馬氏體相變潛熱△HB19→B2隨固溶溫度的升高而明顯降低,隨退火溫度的升高略微降低.相變熱滯、逆馬氏體相變溫度在熱循環初期迅速降低,噹熱循環次數超過2次時則均保持不變.逆馬氏體相變潛熱(△HB19→B2和△HB19'→B19)隨熱循環次數(n＜4)的增加有所升高,特彆是△HB19'→B19增加約48%.而熱循環次數對馬氏體相變溫度和潛熱△HB2→B19的影響則不明顯.
제비Ti50Ni40Cu10합금,병채용시차소묘량열의(DSC)계통분석Ti50Ni40Cu10합금재불동열처리조건하,마씨체상변규률여상변열순배간적관계.결과표명,마씨체상변잠열△HB2→B19화역마씨체상변잠열△HB19→B2수고용온도적승고이명현강저,수퇴화온도적승고략미강저.상변열체、역마씨체상변온도재열순배초기신속강저,당열순배차수초과2차시칙균보지불변.역마씨체상변잠열(△HB19→B2화△HB19'→B19)수열순배차수(n＜4)적증가유소승고,특별시△HB19'→B19증가약48%.이열순배차수대마씨체상변온도화잠열△HB2→B19적영향칙불명현.
Ti50Ni40Cu10 alloy is prepared and its transformation latent heats and hysteresis under conditions of various heat treatment processes and thermal cycling times are systematically investigated by differential scanning calorimeter (DSC). It is found that the reverse martensitic transformation latent heat decreases significantly with the increase of solution temperature and decreases slightly with the increase of annealing temperature. The transformation hysteresis and reverse martensitic transformation temperature decrease abruptly during the initial thermal cycling process and then keep constant with the increase of thermal cycling times over 2. The reverse martensitic transformation latent heat is increased somewhat with the increase of thermal cycling times ( n ＜ 4),especially △HB19,-B19 is increased by about 58 %. The martensitic transformation temperature and martensitic transformation latent heat almost remain constant regardless of the thermal cycling times.
