外文翻譯--沖擊能量對高錳鋼的沖擊腐蝕磨損的影響-其他專業(yè)(編輯修改稿)
2025-02-24 09:57 本頁面
【文章內(nèi)容簡介】 e， with the increase of the impact energy， the impact corrosionabrading mass loss of high manganese steel increased apparently． When being worn for 2 hours， the r ate o f im p act cor ro s io n abr ad in g w eigh t los s w as 1： 3:7 at 2. 0J， J， and impact energy ,respectively． When being worn for 8 hours． it was 1::18． After being worn for 16 hours， the samples under impact energy were already worn seriously, and the rate of weight loss under J and impact energy was 1:6． These results show the accelerating effect of impact on corrosion wear. The result mentioned above shows that high manganese steel had a better impact corrosionabrasion resistance under a lower impact energy． As the impact energy increased， its wearability dropped apparently． Especially when the impact energy increased to ， the impact corrosionabrasion resistance became very low． According to the discussion of wear mechanism， it could be seen that high manganese steel had a preferable corrosion resistance to slow down the formation and deepening of corrosion pits effectively because it was single— phase austenite steel． It could obviously prevent the formation of microcrack’s originating at bottom of etch pits． Crack could only form at micropore or high density dislocation area after some amount of distortion energy had been accumulated by deformation． Under the condition of a low impact energy, the crack was not easy to form and propagate in subsurface stratum because of the less deformation and less stress concentration there． So the alloy had a good wear resistance． Along with the increase of the impact energy, the dominant failure mechanism of high manganese steel being impact corrosion— abrased changed from surface chiseling， breaking of extrusion edge along root and slight shallowlayer spalling， to deep flaking and heavy corrosion． abrasion． Crack originated in subsurface stratum and was independent of surface corroding． So the preferable corrosion resistance had not obvious effect on enhancing impact corrosionabrasion resistance of high manganese steel under a high stress． Its wear mechanism was similar to fatigue
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