稀有金属材料与工程
稀有金屬材料與工程
희유금속재료여공정
RARE METAL MATERIALS AND ENGINEERNG
2010年
3期
552-555
,共4页
于兴哲%赵海燕%宋月清%崔舜
于興哲%趙海燕%宋月清%崔舜
우흥철%조해연%송월청%최순
V-5Cr-5Ti合金%热加工%热模拟%显微组织
V-5Cr-5Ti閤金%熱加工%熱模擬%顯微組織
V-5Cr-5Ti합금%열가공%열모의%현미조직
V-5Cr-5Ti alloys%hot workability%hot simulation%microstructure
通过Gleeble-1500热模拟试验机进行铸态V-5Cr-5Ti合金的高温压缩和拉伸试验,研究压缩过程中变形温度对合金临界变形量和临界变形抗力的影响和在拉伸过程中变形温度对合金屈服强度和断面收缩率的影响规律,并用金相显微镜分析了合金的压缩变形组织.结果表明:V-SCr-5Ti合金的热加工变形抗力大、塑性低,欲改善其加工性能,加热温度的选择及控制尤为重要.合金的加工温度应严格控制在1150～1250℃,变形量控制在30%以内,才能得到满足要求的合金.
通過Gleeble-1500熱模擬試驗機進行鑄態V-5Cr-5Ti閤金的高溫壓縮和拉伸試驗,研究壓縮過程中變形溫度對閤金臨界變形量和臨界變形抗力的影響和在拉伸過程中變形溫度對閤金屈服彊度和斷麵收縮率的影響規律,併用金相顯微鏡分析瞭閤金的壓縮變形組織.結果錶明:V-SCr-5Ti閤金的熱加工變形抗力大、塑性低,欲改善其加工性能,加熱溫度的選擇及控製尤為重要.閤金的加工溫度應嚴格控製在1150～1250℃,變形量控製在30%以內,纔能得到滿足要求的閤金.
통과Gleeble-1500열모의시험궤진행주태V-5Cr-5Ti합금적고온압축화랍신시험,연구압축과정중변형온도대합금림계변형량화림계변형항력적영향화재랍신과정중변형온도대합금굴복강도화단면수축솔적영향규률,병용금상현미경분석료합금적압축변형조직.결과표명:V-SCr-5Ti합금적열가공변형항력대、소성저,욕개선기가공성능,가열온도적선택급공제우위중요.합금적가공온도응엄격공제재1150～1250℃,변형량공제재30%이내,재능득도만족요구적합금.
By means of hot compression and tension test on a Gleeble-1500 equipment for the as-forged V-5Cr-5Ti alloys, the effect of the deformation temperature on the critical deformation and critical deformation resistance in the compression process were studied, its effect on the yield strength and percentage reduction of area in the tension process were also studied. The deformation microstructure of hot compression specimen was analyzed by OM. Results show that the V-5Cr-5Ti alloys have high deformation resistance and low plasticity. In order to improve the hot workability, the hot-working temperature range must be strictly selected and controlled. The optimum hot-working temperature range of V-5Cr-5Ti alloys should be 1150-1250 ℃, and the deformation amount should be below 30% to get satisfactory alloys.
