【摘 要】
：
A new method to modify the solidification microstructure of titanium alloys, named melt hydrogenation,by adding TiH2 as additive into the melt of titanium alloy
【机 构】
：
National Key Laboratory of Hot Precision Process of Metal, Harbin Institute of Technology, Harbin 15
论文部分内容阅读
A new method to modify the solidification microstructure of titanium alloys, named melt hydrogenation,by adding TiH2 as additive into the melt of titanium alloys during induction skull melting process (ISM), is put forward and the refining effect of this method on the solidification microstructure of Ti-6Al-4V alloy was studied experimentally. After melt hydrogenation, the grain sizes of as-cast Ti-6Al-4V alloy decreased to 612 μm from 1,072 μm, lath-shaped a phase was also refined and fine α/β lamellar microstructure was formed when 1.0 wt.% TiH2 was added.δ-hydride was found in the X-ray diffraction (XRD) spectra of Ti-6Al-4V alloy that prepared with 1.0 wt.% TiH2 added and the δ-hydride distributes in α phase as acicular precipitations.
其他文献
PetroChina Liaoyang Petrochemical Company, a subsidiary of PetroChina Company Limited, is one of China’s largest bases for production of petrochemicals and ch
随着现在制药业的高速发展,制药质量控制成为了药物质量的关键,本文就当今制药企业制药过程中存在的问题进行了深入的分析与探讨.其次药物质量的标准要明确,进而采用一些药物
灵芝具有保健和药用价值,利用固体发酵技术培养菌丝体以获得生物活性物质的研究备受瞩目。该研究结合国内外的研究资料,从菌株选用及发酵条件、发酵过程中营养物质及相关酶活
As the largest oil refining and chemical production enterprise in the western part of China, PetroChina Lanzhou Petrochemical Company is a regional company of
新疆药桑桑叶中的总生物碱含量高于普通桑叶,具有较好的降血糖作用,可用于治疗糖尿病、肥胖症等疾病.分析了新疆药桑桑叶的活性,介绍了生物碱提取方法,并在超声波辅助提取桑
靖西壮族织锦品种多样,可用作背带、床毯、衣物装饰、被面、围裙、手提袋、腰带、挎包、头巾等,做工精致,图案丰富多彩。靖西壮族妇女用彩色丝线将古朴、独特、繁复美丽的图
本文测定异戊二烯中环戊二烯分别采用了经典气相色谱法和Dean-switch切换气相色谱法进行比较.Dean-switch切换气相色谱法分离效果明显,准确性高.环戊二烯用外标法进行定量.
对百色地区107例非何杰金氏恶性淋巴瘤的病理组织类型进行分析,结果表明组织类型以弥漫型为主(88.8%),细胞类型以B细胞淋巴瘤多见(95.3%),T细胞淋巴瘤比国内外偏低,而且差别
提高高职学生的职业核心能力,是企业和学生自身的迫切需求。而高职生的特点和人才培养的目标适合开设职业核心能力课程。但现在职业核心能力课程在开设过程中存在着模块内容
我国社会主义经济与文化的不断发展推动了城市建设的进程不断加快,建筑给排水管道所产生的噪音,是城市生活中噪音污染的主要来源之一,它对人们的生活产生了严重的影响.为了响