研究了二次热等静压(HIP)工艺对不同起始组织HIP态TC4合金显微组织的影响.结果表明,二次HIP主要通过扩散进行组织的致密化,致密化过程中形成等轴块状α相填充孔洞,同时原始致密组织中片状α相层片间距增大.与首次HIP相比,二次HIP的致密化过程相对较慢,孔隙尺寸较大体积分数高的初始组织,经二次HIP后会形成不均匀组织,为了获得细小均匀的致密组织,应尽量在首次HIP时完成致密化.
参考文献
| [1] | Yolton CF.;Beckman JP. .POWDER METALLURGY PROCESSING AND PROPERTIES OF THE ORDERED ORTHORHOMBIC ALLOY TI-22AT.PERCENT-AL-23AT.PERCENT-NB[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1995(0):597-603. |
| [2] | Ulrike H;Brian J McTiernan .HIP temperature and properties of a gas-atomized g-titaniumaluminide alloy[J].Intermetallics,2004,12:63-68. |
| [3] | 黄劲松,黄岚,张永红,刘彬,刘咏,贺跃辉,黄伯云.热处理工艺对 Ti-45Al-7Nb-0.15B-0.7W合金微观组织的影响[J].材料热处理学报,2006(06):78-83. |
| [4] | 苏美科,郑立静,张虎.热处理对铸态TiAl基合金组织细化的影响[J].材料热处理学报,2010(09):99-103. |
| [5] | 杨伟光,赵嘉琪,南海,吴国清.热等静压工艺参量对ZTC4钛合金组织的影响规律[J].材料工程,2011(09):25-28. |
| [6] | 王晓林,王兰芳,朱仲忍,张笃怀,丁五洲,窦永庆.热等静压处理对TC1O合金铸造组织与性能的影响[J].特种铸造及有色合金,2011(08):760-761. |
| [7] | Leedy K D;Stubbins J F .Copper alloy-stainless steel bonded laminates for fusion reactor applications:tensile strength and microstructure[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2001,297:10-18. |
| [8] | 叶呈武,王琪,李圣刚,郎泽保,贾文军.两种模具材料对热等静压 TC4显微组织的影响[J].宇航材料工艺,2012(04):75-77,84. |
| [9] | 娄贯涛 .热等静压和锻造对ZTC4组织及力学性能的影响[J].中国有色金属学报,2010,20(10):S753-S755. |
| [10] | D.P. DFLO;H.R. PIEHLER .EARLY STAGE CONSOLIDATION MECHANISMS DURING HOT ISOSTATIC PRESSING OF Ti-6Al-4V POWDER COMPACTS[J].Acta materialia,1999(9):2841-2852. |
| [11] | Li W B;Ashby M F;Easteding K E .On densification and shape change during hot isostatic pressing[J].Acta Metallurgy,1987,35:2831-2842. |
| [12] | Songm M C;Kim H G;Kim K T .Creep densification of copper powder compact[J].Int J Mech Sic,1996,38(11):1197-1208. |
| [13] | Kim K T;Yang H C .Desification behavior of titanium alloy powder during hot pressing[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2001,313:46-52. |
| [14] | Haggblad H A;Li W B .A micro mechanical based constitutive model for finite element simulation of hot isostatic pressing of powder[J].Comput Methods Appl Meeh Engrg,1995,128:191-198. |
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