中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2014年
9期
2815-2823
,共9页
1050铝合金%非对称铸轧%多能场%显微组织%力学性能
1050鋁閤金%非對稱鑄軋%多能場%顯微組織%力學性能
1050려합금%비대칭주알%다능장%현미조직%역학성능
aluminum alloy 1050%asymmetric cast-rolling%multi-energy field%microstructure%mechanical properties
在d400 mm×500 mm水平式双辊铸轧机上，研究了采用多能场非对称铸轧方法制备1050铝合金板带的最合理工艺参数，并对比分析了多能场非对称铸轧对组织和性能的影响。结果表明：在铸轧区长度70 mm、前箱温度670°C、铸轧速度1.3 m/min、励磁电流10 A、中心频率(13±1) Hz、超声功率200 W、超声波频率(20±0.2) kHz的条件下，制备出具有最佳组织和性能的1050多能场非对称铸轧板带，铸轧板带的中心分凝面消失，晶粒尺寸减小约40%，且分布均匀，微观偏析明显减少，析出相均匀分布于晶界处，铸轧板带的抗拉强度、屈服强度、伸长率和显微硬度分别提高了22.6%、23.66%、38.75%和9.90%。
在d400 mm×500 mm水平式雙輥鑄軋機上，研究瞭採用多能場非對稱鑄軋方法製備1050鋁閤金闆帶的最閤理工藝參數，併對比分析瞭多能場非對稱鑄軋對組織和性能的影響。結果錶明：在鑄軋區長度70 mm、前箱溫度670°C、鑄軋速度1.3 m/min、勵磁電流10 A、中心頻率(13±1) Hz、超聲功率200 W、超聲波頻率(20±0.2) kHz的條件下，製備齣具有最佳組織和性能的1050多能場非對稱鑄軋闆帶，鑄軋闆帶的中心分凝麵消失，晶粒呎吋減小約40%，且分佈均勻，微觀偏析明顯減少，析齣相均勻分佈于晶界處，鑄軋闆帶的抗拉彊度、屈服彊度、伸長率和顯微硬度分彆提高瞭22.6%、23.66%、38.75%和9.90%。
재d400 mm×500 mm수평식쌍곤주알궤상，연구료채용다능장비대칭주알방법제비1050려합금판대적최합리공예삼수，병대비분석료다능장비대칭주알대조직화성능적영향。결과표명：재주알구장도70 mm、전상온도670°C、주알속도1.3 m/min、려자전류10 A、중심빈솔(13±1) Hz、초성공솔200 W、초성파빈솔(20±0.2) kHz적조건하，제비출구유최가조직화성능적1050다능장비대칭주알판대，주알판대적중심분응면소실，정립척촌감소약40%，차분포균균，미관편석명현감소，석출상균균분포우정계처，주알판대적항랍강도、굴복강도、신장솔화현미경도분별제고료22.6%、23.66%、38.75%화9.90%。
Technological parameters of asymmetric cast-rolling under multi-energy field were investigated on horizontal twin roll caster (d400 mm×500 mm), and their effects on structures and properties of 1050 strips were analyzed by comparing with traditional cast-rolling. Results show that when length of cast-rolling area is 70 mm, melt temperature of head box is 670 °C, cast rolling speed is 1.3 m/min, exciting current is 10 A, center frequency is (13±1) Hz, ultrasonic power is 200 W and ultrasonic frequency is (20±0.2) kHz, the 1050 strip with the best microstructure can be prepared successfully; its center segregated layer disappears; the average grain size is reduced by about 40%;the crystal grains are distributed evenly;micro segregation decreases obviously;the precipitated phases are distributed along the grain boundaries evenly;and the tensile strength, yield strength, elongation and micro-hardness of cast-rolled strip are improved by 22.6%, 23.66%, 38.75%and 9.90%, respectively.
