常見(jiàn)例句The results show that the microstucture of hardening layer lousiest of acicular marten site,retained austenite,graphite in fake and boride. 采用等離子束對(duì)硼鑄鐵進(jìn)行了表面強(qiáng)化,對(duì)等離子強(qiáng)化層的顯微組織、顯微硬度和耐磨性進(jìn)行了研究。The addition of alloy elements such as Manganese, Nickel, Chromium, and Molybdenum changes the matrix microstructure from pearlite, bainite to marten site. 由于添加了鎳、錳、鉻、鉬等合金元素,基本組織可以從珠光體、貝氏體進(jìn)化為馬氏體。Combining with the results of implant test, the conclusion that the main reason of dropping the strength of Austenite zone is the micro-crack located in the tip of flake graphite and Marten site is drawn. 結(jié)合插銷試驗(yàn)結(jié)果提出了馬氏體相變過(guò)程中,在片狀石墨尖端及馬氏體組織中造成的微裂紋是奧氏體區(qū)強(qiáng)度下降并進(jìn)而在外力作用下斷裂的主要原因。secondary quenching marten siting 二次淬火馬氏體Keywords internal stress;marten site transformation;quenching distortion;heat treatment;dress; 內(nèi)應(yīng)力;馬氏體轉(zhuǎn)變;淬火變形;熱處理;矯直;Keywords inner stress;marten site transformation;quench distortion;heat treatment;straightening; 內(nèi)應(yīng)力;馬氏體轉(zhuǎn)變;淬火變形;熱處理;矯直; 返回 marten site