相變硬化 的英文怎麼說
中文拼音 [xiāngbiànyìnghuà]
相變硬化
英文
transformation hardening-
Based on the analyses on mechanical properties, microstructure and fracture of - the microalloyed steels socrv with various heat treatment technique, it can be affirmed that various fractures arttribute to various mechanism, we can draw conclusion that the strength and toughness of microalloyed steels 50crv will be increase simultaneously by optimal heat treatment technique. to illustrate the mechanism of the strength and toughness of microalloyed steels socrv, we designed the comparative experiment and observed the microstructure of the sample which occurred at different quench and tempering temperature and different tempering time. the last experiment results were determined by the four factors : fined microalloyed elements grains, the decompound of martensite, martensite transformation of remnant austenite and the second phase precipitation
為解釋微合金化50crv鋼強韌化機理，本文通過對不同淬火溫度，回火溫度，回火時間下的力學性能指標的對比及顯微分析，認為微合金元素的細化晶粒，馬氏體的回火分解，殘余奧氏體的轉變，第二相的沉澱析出共同決定了微合金鋼的強韌化情況，特別是由於微合金元素的存在，其細化晶粒及其碳氮化物的沉澱析出，導致鋼的良好的強韌性，並且如果工藝滿足第二相的沉澱析出強化大於回火馬氏體分解引起的軟化效應，會在硬度曲線中產生明顯的二次硬化現象。Conclusion : mild - moderate donor liver macrovesicular steatosis has no impact on hcv recurrence after liver transplantation for hcv - related cirrhosis. cold ischaemia time and donor age increased the likelihood of hcv recurrence
結論：輕中度微小脂肪變性與丙肝肝硬化患者移植術后丙肝復發無相關性。冷卻血時間和供體年齡是增加丙肝復發可能性的主要原因。The unstable solid solution would disintegrate and transform into carbide phases in these systems of sisocso, tisocso and zrsocso, based on the increase of free energy introduced by the effect mechanical alloying. for the system of wsocso, the solid solution had not transformed into tungsten carbides but an amorphous phase, which was different from those systems. the exist of fe in these experiments, which came from the abrasion of ball - milling tool because of the higher hardness of w and w - c solid solution, would induce the crystalline - to - amorphous phase transformation during milling
C50球磨體系中，繼續球磨時，不穩定的固溶體在機械合金化作用下，由於體系能量提高，會發生分解相變，從而可以形成碳化物；對于w扣c50球磨體系， w ? c固溶體具有較高的硬度，磨削不銹鋼質的球磨介質和球磨容器，而引入雜質，其中fe會促使固溶體向非晶相轉變。Although there is no association of their metabolism, their parallellic abnormality in dicates that some possible factors changing in diabetics can influence the metabolic pathway of both lipid and uric acid which may promote each other for atherogenesis in diabetics
雖然二者沒有明顯相關性，但在糖尿病患中，二者平行的現象，表示可能有一些在糖尿病改變的因素能夠同時改善脂肪及尿酸之代謝，誕改變可以互相促進糖尿病患的血管硬化。The effects of baking temperature, baking time and prestrain on the bake hardenability and dent resistance of isotropic sheet steel and bh sheet steel produced by batch annealing were studied
摘要研究了烘烤溫度、烘烤時間和預拉伸應變量對罩式爐退火工藝生產的各向同性鋼的烘烤硬化性的影響，並與力學性能相當的冷軋烘烤硬化鋼進行了對比。It can be noticed that both r and t specimens show initial hardening and subsequent softening at the strain amplitude higher than 0. 8 % and cyclic softening from the beginning to fracture under strain amplitude less than 0. 8 % at room temperature, and the cyclic flow stress was always lower in r specimen than in t specimen at the same strain range
且在相同的應變幅下， t向試樣比r向試樣具有更高的循環流變應力。此外，對r向及t向試樣，低應變幅下呈現出循環軟化現象是因為晶粒旋轉導致循環軟化；而在高應變幅下發生循環硬化是由於孿晶作用的結果。The experimental results is shown as followings : ( 1 ) the cyclic flow stress - strain curves in an incremental step test could be expressed as the power law relation : ( 2 ) when the strain amplitude is lower during cyclic deformation tests under constant strain control, softening firstly appears, then gradually hardens with the increasing numbers of cycle ; when the strain amplitude is higher, hardening firstly appears, then gradually softens
試驗結果表明： （ 1 ）循環流變應力與應變的相互關系曲線均符合冪律關系式： （ 2 ）在室溫下進行恆應變幅循環變形過程中，當所控制的應變幅較小時，該材料首先出現循環軟化，之後隨循環周次的增加直至循環失效前該材料出現了硬化現象。當應變幅較大時，該材料開始出現硬化，然後隨循環周次的增加才出現軟化。The results indicated that, the fabrication process of ultra - fine grain material is mainly determined by the stress, rotate speed and the flux of cooling water. the grain refining and the hardening effect are mostly affected by the rotate speed and the flux of cooling water. compared with commercial ly12, the invalidate strength and the prolongation rate of the ultra - fine grain material are properly improved in the measurement of compression property ; and the abrupt change of the dilatability of the ultra - fine grain material at 500c is found ; also the phenomena of which the grain size of these microstructures is stable when annealed under 300c is observed
研究表明，採用本文提出的摩擦壓扭強變形區轉移法可以得到棒狀的超細晶材料，軸向壓力、扭轉速度和溫度是採用該方法制備超細晶材料的主控參數；試件的旋轉轉速和冷卻速度對變形區晶粒細化和硬化效果影響顯著；超細晶ly12的壓縮性能與淬火+自然時效狀態的ly12壓縮性能相比，斷裂強度和延伸率均有一定程度的增強；超細晶ly12的熱膨脹系數在550左右發生明顯的變化。Results of experiment show that the reason of strength decreasing of gypsum added with retarders is that the retarders reduce the supersaturation of liquid phase, and makes the crystal grain largen, and pore is followed to worsen, which lead to the strength drop to a large degree
實驗結果分析表明：在摻加緩凝劑后石膏硬化體強度下降的原因在於緩凝劑降低了石膏的液相過飽和度，使結晶顆粒變大，使石膏的孔結構惡化，最終導致了宏觀強度大幅度下降。Research on characteristics of friction and wear of high speed steel w6mo5cr4v
激光相變硬化高速鋼的摩擦磨損特性研究The high wearing resistance of the samples after hydrocooling and air cooling was partially attributed to martensite transformation and work - hardening
經水冷和空冷的試樣具有高耐磨性的重要原因是其在磨損過程中誘發了馬氏體相變，出現加工硬化現象。It is shown that the high hardness and low thermal conductivity promote the formation of transformed asbs, and the deformed asbs will form if low hardness and high thermal conductivity are involved ; for steel with both high hardness and thermal conductivity, the transformed asbs will transform into deformed ones, due to that the fast heat conduction from high temperature asbs results in rapid temperature rise around and thus decreasing the hardness
研究結果表明：鋼的高硬度和低熱導率有利於形成相變帶；反之，則傾向于形成變帶；對于具有高硬度和高熱導率的鋼，由於高溫相變帶區域的熱量迅速傳遞到周圍的基體組織而使其溫度升高、硬度降底，形成的相變帶會向形變帶轉化。Laser quenching is one of the important field of using laser technology in industry, which is closely connected with several subjects, i. e. laser physics theory, laser processing technology, metal physics et, al
激光淬火（相變硬化）是激光技術在工業中應用的一個重要領域，該技術與激光物理學、激光加工技術、金屬學熱處理等幾門學科緊密相關。Comparing with these several strengthen formal, towards strength limit ' s improvement, the effect of torsion - tension and tension - torsion - tension was close ; simply tension - torsion - tension required a little larger prestrain quantity. whereas, towards yield limit " s improvement, the effect of torsion - tension - tension action ' s strengthen was the best
從幾種硬化形式的比較來看，對于強度極限的提高，扭轉-拉伸和拉伸-扭轉-拉伸的強化效果相近，只是拉伸-扭轉-拉伸所需的預應變量要大一些；而對于屈服極限的提高，扭轉-拉伸-拉伸作用下的強化效果最佳。Studies on technology of transformation hardening on laser surface of ring - gear
齒圈激光表面相變硬化處理技術研究Abstract : in this paper, the principle of laser transformation hardening ( lth ) is introduced, what lth who raises life of metallic materialc is aimed at is discussed, and then we study the mechanism to enhance life of metallic matrerials
文摘:介紹了激光熱處理的原理，並討論其提高金屬材料壽命的針對性，進而研究激光相變硬化提高材料壽命的機理。In this paper, some of the techniques, including laser cladding, laser melting and solidifying, laser phase transformation hardening, laser shock processing, laser surface alloying have been introduced in brief and the prospect of this technique is viewed
對工業應用中比較常見的激光熔覆、激光表面熔凝、激光相變硬化、激光沖擊強化、激光表面合金化等激光表面改性技術進行了綜述，並在此基礎上展望了激光表面改性技術的發展前景。Situation of 2nd - order phase transition rigidization technique used in space inflatable structure
空間充氣展開結構二級相變硬化技術研究現狀Numerical simulation of 3 - d transient temperature field during continuous yag laser transformation hardening process
激光相變硬化三維瞬態溫度場數值模擬In laser surface hardening for the mould - roller, the hardened depth was controlled by laser specific energy density ( p / dv ), and proper overlapping ratio is the technical key. 3
在模切輥激光表面強化中，激光比能密度p dv是影響相變硬化層深度的主要因素，搭接率的正確選取是模切輥表面強化技術的關鍵。分享友人