馬氏硬度 的英文怎麼說

中文拼音 [mǎshìyìngdù]
馬氏硬度 英文
martens hardness
  • 馬 : Ⅰ名詞1 [動物學] （哺乳動物） horse 2 （象棋棋子） horse one of the pieces in chinese chess3 （姓...
  • 氏 : 氏名詞1 （姓） family name; surname 2 （放在已婚婦女的姓后 通常在父姓前再加夫姓 作為稱呼） née : ...
  • 硬 : 形容詞1 （堅硬） hard; stiff; tough 2 （剛強; 堅定; 強硬） strong; firm; tough; obstinate 3 （勉...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 馬氏 : ma
  • 硬度 : hardness; solidity; scirrhosity （腫瘤的）
  1. 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。
  2. Martens hardness tester

    馬氏硬度試驗器
  3. Abstract : the structure and the properties of the grinding ball made of the composite cast iron have been researched in this paper. the result indicates that added trace boron and a proper quantity copper to this kind of composite cast iron can increase its quench - hardening ability, and raise its hardness and impact toughness

    文摘:研究了一種復合鑄鐵磨球的組織和性能，結果表明，化學成分和淬火工藝對這種復合鑄鐵磨球的組織和性能有很大影響，微量的硼和適量的銅可以明顯地提高磨球的淬透性，經過余熱淬火得到貝氏體或馬氏體基體組織，從而提高磨球的硬度和沖擊韌性。
  4. The result shows that tempered martensite has apparent lath character when temper is between 740 ~ 780, and the hardness of welded joint is 264 ~ 237hv, which can get better performance of the welded joint the lath character of martensite in welded joint disappears, and the carbide in the tempered sorbite of the base metal will aggregate when temper temperature is above 780, and the hardness and plastic property will reduce obviously

    結果表明，在740 ~ 780之間回火，焊縫硬度為264 ~ 237hv ，回火馬氏體板條特徵明顯，可以獲得優良的焊接接頭性能；回火溫度超過780 ，焊縫板條馬氏體特徵消失，母材回火索氏體中碳化物產生偏聚，硬度、塑性明顯降低。
  5. Traditionally, pump manufacturers have specified hardened martensitic stainless steels for critical wear parts, maintaining a 50 - 100 brinell hardness difference between rotating and stationary components as experience has shown this is adequate to prevent galling

    通常，製造商採用特殊的淬火馬氏體不銹鋼製造關鍵磨損件，旋轉件和固定件的布氏硬度分別保持在50 - 100 ，經驗表明，足以防止發生咬合現象。
  6. We studied the effect of laser quenching ( harden by phase transformation ) on some representative mould steels. through measuring the rigidity on the surface of samples treated by laser heat treatment, and through photographing microstructures of the steel surface, we find many reasons attribute to high hardness. these reasons include ultra - fine grains, high density dislocation and more content of carbon in martensite

    我們研究的是激光淬火對幾種典型模具鋼的作用，通過對熱處理后的試樣的硬度分佈的測定，用金相和電鏡觀察金相組織的變化，認為激光熱處理產生高硬度的原因是晶粒細化、高的位錯密度和高的馬氏體含量。
  7. Especially the polymer by ion beam processing exceeds martensite steel in the surface hardness

    特別是其表面硬度遠高於目前公認的最硬的馬氏體鋼，其耐磨性明顯優于滾珠軸承鋼。
  8. The result shows that it is mainly caused by the martensite with high hardness produced after rail absorbing frictional heat

    斷裂的主要原因是鋼軌在吸收摩擦熱后產生了高硬度的馬氏體。
  9. Are made of tempered martensite, with moderate hardness, excellent elasticity, wear - resistant, give less dust, longer recycle life, low cost, extensively used for shot peening to give residual stress in the surface layer of components for fatigue life enhancement and suppression of stress corrosion cracking and descaling and cleaning up surfaces of castings, steel parts and mechanical work - pieces prior coating

    鋼丸鋼砂主要金相組織為?火馬氏體組成，具有適當的硬度良好的反彈性耐磨性粉塵少循環使用壽命長成本低等特點，廣泛應用於鑄件鋼件機加工件的表面噴塗前的表面去皮，清理。
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