将3 μm的钼粉以250 MPa的压强保压60 s,压制成厚度为30 mm的坯料,在1900℃氢气中烧结4小时得到钼板。然后1400 ℃开坯,将钼板从30 mm热轧至19 mm,再通过两道次或者3道次将钼板轧制2 mm或者1 mm。力学性能采集方案:从每个平板上沿着轧制方向、垂直轧制方向、与轧制方向夹角为45°方向切割下5个骨头样拉伸,最后取平均值;从每个平板上取两个平行样品,对样品表面进行机械研磨和抛光,硬度试验在HVS-1000维氏硬度计上进行,载荷0.3 kg,保压时间15 s,对每个样品进行五次硬度测量,并确定平均值。显微结构采集方案:首先对样品表面进行机械研磨和抛光,然后在53 %铁氰化钾和49 %的氢氧化钠混合溶液中腐蚀60 s,用leica DMIL LED显微镜观察了其显微结构。织构采集方案:在机械抛光制备的平板表面和中心进行了织构测量。采用Bruker X射线织构应力仪(D8 Discover)进行极图的测定,其测量极图的晶面为(110)、(200)、(211),然后利用相关软件分析得到对应的ODF图来表征样品表层织构和中心织构。
Molybdenum powder of 3 μm is pressed into a blank of 30 mm thickness by holding pressure at 250 MPa for 60 s. The molybdenum sheet is sintered in hydrogen at 1900 °C for 4 h to obtain a molybdenum plate. Then the billet is opened at 1400 ℃ and the molybdenum plate is hot rolled from 30 mm to 19 mm, and then the molybdenum plate is rolled to 2 mm or 1 mm by two or three passes. mechanical properties collection scheme: five bone samples are cut from each plate along the rolling direction, perpendicular rolling direction, and the angle of 45° with the rolling direction for stretching, and finally the average value is taken; two parallel samples are taken from each plate, and the surface of the samples is Mechanical grinding and polishing were carried out, and hardness tests were performed on a HVS-1000 Vickers hardness tester with a load of 0.3 kg and a holding time of 15 s. Five hardness measurements were performed on each sample, and the average value was determined. Microstructure acquisition scheme: The samples were first mechanically ground and polished on the surface, then etched in a mixture of 53 % potassium ferricyanide and 49 % sodium hydroxide for 60 s. The microstructure was observed with a leica DMIL LED microscope. Weaving acquisition protocol: Weaving measurements were performed on the surface and in the center of the mechanically polished prepared plates. The Bruker X-ray weave stress meter (D8 Discover) was used for the determination of the polar maps, which measured the crystallographic surfaces of (110), (200) and (211), and then the corresponding ODF maps were analyzed using the relevant software to characterize the surface weave and the central weave of the samples.