www.melanexjou.fora.pl

[loiwtjsf]

Isothermal binary y-based titanium casting of aluminum compound fracture properties at room temperature


6ram, span 30ram; with 7 samples with a side channel of the base titanium, aluminum, depending on the mechanical properties of Taiwan Jun significant shake (size 5mmxlOimax55 bleed at the nose n) for breaking organization,[link widoczny dla zalogowanych], Taijin way to add Jing and process. By casting and thermal toughness test; four-point bending method with Chen and the subsequent processing workers crack the binary isothermal forging of titanium aluminide base station 7, Ren-test, the sample size is 5mm × 10mm × 55ram; (respectively Ti a 50Ai -HT and HF ~ 5oA1 a test table with the back of the crack closure strain gauge technology; by scanning display) studied the isothermal forging the impact of their observation room temperature fracture properties and fatigue crack propagation fracture surface distance. . Ring. By using high purity materials such as plasma arc melting and casting to test results show that the New York of forging such a mist? Base preparation Chiang ingots. Casting material under vacuum above 1.3mPa titanium, aluminum,[link widoczny dla zalogowanych], grain matter guys Taiwan, Ti a 50A1 an average grain size of HT 200m, Li Ti a 50m one Ⅱ F, the average grain size is about 25 Laos /. zm, X-ray diffraction analysis of the former existence of a small amount of 2 phase, which no 2-phase diffractive Bee: improvement of the isothermal forging of titanium aluminide-based flexural strength and fracture toughness, Ti 50A1-I-IT a flexural strength of B = 394MPa bending displacement = 0.27ram, fracture toughness mean B = 420MPa, = 0.45ram,[link widoczny dla zalogowanych], = 15.3MPa,[link widoczny dla zalogowanych], plant i. Proved the inherent casting and heat treatment of materials is superior fatigue crack growth, isothermal forging materials; fine-grained material has a high isothermal forging the crack closure level; both the fracture patterns are rivers with typical transcrystalline Solutions cleavage fracture models of governance. Sex = l4.7Mra41 (Hao Ai-zhen) Yu initial money, powder metallurgy molybdenum War low intensity F is well known. Deleted alloy chemistry major. And the number of the mechanical properties of molybdenum Mo-0.55% Ti a 0.1% zr 'quality of Japan's Okayama University have significant effect on investment. Hil-aOka and colleagues studied the Mo-Ti alloys in low-Te Li along with the improvement of dc gradually reduced. This temperature strength and ductility. Show that the scalability is improved. Of the alloy by the powder metallurgy technology. Mo-care co-payment similar fracture mode and pure molybdenum, gold molybdenum component is added in the main grain 0.1,0.2,0.5 and asked the fracture. However, the addition of titanium off the grain cyberspace 1.0wt% Ti. Tensile test temperature at 170 ~ 363K crack strength and transgranular fracture strength have been improved. Degree under. Fracture surface by scanning electron microscopy. Off in a small amount of molybdenum in titanium. Improve the extension of crack in the form of molybdenum by the total area of intergranular fracture area of the fracture, the test results and previous test results at room temperature, the percentage (P) to determine the so-called PIF parameter results are consistent. However, analysis showed that the increased scalability of the law. When PIF = 100%, indicating the machine is completely crystal columbium not identical. Japanese believe that the extension asked fracture of molybdenum; When PIF = 0%, indicating the wear of the increase is entirely due to the formation of titanium in solid solution in molybdenum, which intergranular fracture. Improve grain boundary strength of molybdenum industry results. The results showed that, Mo-Ti alloy strength and previous test results that: The addition of titanium to improve ductility of molybdenum and temperature dependence similar to pure molybdenum. With the yield strength, but at the same plastic to a brittle transition of molybdenum critical stress c (in 1'cI produce micro-cracks near stress) temperature rise, this and Y. FILraoka other people's test results and the critical temperature Tc (a brittle plastic transition temperature),[link widoczny dla zalogowanych], respectively, on behalf of the inconsistency: their results show that: the number of table join titanium material strength and ductility. Reached 1. Owt%, still be able to improve the crystal with the news breaking strength c increased with the increase of titanium content, the reason is the strength of titanium and transgranular fracture, which increased the value is greater than the yield oblige the grain refinement; while smaller grains are a higher degree of increase in yield value; not only reduce the ductility of molybdenum. Anti strength and tensile strength. Another effect of adding titanium to increase Jing. , Is to increase the oxygen content in feed. Because of the resulting oxide scale (can be expensive a hail Jie Qiu, Bo B, lf-f text a 15-3 Ti alloy phase region of cold treatment plus lIjfdoc scoop rare .1 c work widely fcf) '. 7. - As an aviation titanium aircraft structural materials. The attention has been paid, in particular. Much of the gold Jing, Lai. At high specific strength and excellent corrosion resistance increasing reason Lai, one of these alloys although the high cost of some, * 11

相关的主题文章：


[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]