热加工工艺
熱加工工藝
열가공공예
HOT WORKING TECHNOLOGY
2009年
24期
65-67,83
,共4页
王蕊宁%高文柱%吕利强%奚正平
王蕊寧%高文柱%呂利彊%奚正平
왕예저%고문주%려리강%해정평
TiC颗粒%钛基复合材料%热变形%本构关系%变形激活能
TiC顆粒%鈦基複閤材料%熱變形%本構關繫%變形激活能
TiC과립%태기복합재료%열변형%본구관계%변형격활능
TiC particle%Ti-based composites%hot deformation%constitutive relations%deformation activation energy
在Gleeble-1500热模拟试验机上进行热压缩试验.研究了变形温度为900～1150℃、应变速率为0.001～10 s~(-1)时TiC颗粒增强钛基复合材料的热变形行为,根据所得应力应变曲线分析了该合金的热变形特征,并采用双曲正弦模型建立了该钛基复合材料的本构关系.计算了α+β区域的平均变形激活能为691 kJ/mol,β区域平均变形激活能为202 kJ/mol.
在Gleeble-1500熱模擬試驗機上進行熱壓縮試驗.研究瞭變形溫度為900～1150℃、應變速率為0.001～10 s~(-1)時TiC顆粒增彊鈦基複閤材料的熱變形行為,根據所得應力應變麯線分析瞭該閤金的熱變形特徵,併採用雙麯正絃模型建立瞭該鈦基複閤材料的本構關繫.計算瞭α+β區域的平均變形激活能為691 kJ/mol,β區域平均變形激活能為202 kJ/mol.
재Gleeble-1500열모의시험궤상진행열압축시험.연구료변형온도위900～1150℃、응변속솔위0.001～10 s~(-1)시TiC과립증강태기복합재료적열변형행위,근거소득응력응변곡선분석료해합금적열변형특정,병채용쌍곡정현모형건립료해태기복합재료적본구관계.계산료α+β구역적평균변형격활능위691 kJ/mol,β구역평균변형격활능위202 kJ/mol.
The hot deformation behaviours of TiC particle reinforced Ti matrix composites were studied at 900 1150℃ and strain rate of 0.001～10s~(-1). The compression testing was carried out on the Gleeble-1500 simulator by. On the basis of flow stress date obtained as a function of temperature and strain rate in compression, the deformation activation energy of 691 KJ/mol in α+β region and 202 kJ/mol in β region were calculated and constitutive relations were established using hyperbolic sine constitutive equation.
