hydrogen brittle 中文意思是什麼
hydrogen brittle
解釋
氫脆-
: 36 < kth < 37 mpa / m3 / 2, 42 < kih < 44mpa / m3 / 2, 51 < kc < 52 mpa / m3 / 2 through the sem fractography, it is know that the susceptibility to brittle failure at room temperature is more than below 100 ?. and the susceptibility to brittle failure increase with hydrogen increasing, under the sustained loading, ductile cracking appears. the quantity of brittle cracking is more with crack growth
T44mpa m 『 q ， sl lt52mpa in 』 」斷口分析表明，該合金充氫后其室溫時的氫脆敏感性大於100oc時的氫脆敏感性；且隨氫含量升高，氫脆敏感性增加：在恆載荷的作用下，該合金裂二紋開始擴展時顯示的是韌性起裂；隨裂紋增長，試樣脆性斷裂的比例增大。 -
Results show that the brittle fracture is mainly caused by hydrogen brittleness that results from the oxidation arid absorbing hydrogen of copper tube during braze welding
同時在加熱和冷卻時，由於異種材料的熱脹系數差別過大，產生的較大熱應力作用於已存在的裂紋，促使裂紋二次擴展，甚至使得晶粒脫落產生空洞，最終導致焊接接頭漏氣失效。 -
Testing of high - strength steel building elements for resistance to hydrogen - induced brittle fracture and advice on the prevention of such fracture
高強度結構鋼部件耐氫誘導易脆斷裂的特性.用支柱試驗 -
The main reason are as following : on one hand, the nd - rich phases in the hydrogen desorpted powders is so brittle that they are easily milled too fine and some are run off seriously, and then inducing low density. on the other hand, the alignment of the magnets prepared by hydrogen desorption are much low. so the hydrogen desorption process should be modified, and the solution methods can be the substitution of traditional ingots with strip cast, the enhancement of the alignment magnetic field and the addition of nd - rich phase or ( and ) lubricant before the press
主要原因是hd磁粉中的富釹相較脆，在球磨時容易被磨成超細粉而造成過量流失和使磁體燒結不夠緻密；另外一個原因是hd法燒結磁體的易磁化軸的取向度較低，為了提高hd磁體的b _ r和（ bh ） _ （ max ）可對hd工藝進行改進，改進的方法可以是用鑄片代替鑄錠，提高成型磁場強度以及在磁粉成型前加富釹相和潤滑劑。 -
Hydrogen brittle fracture analysis of two specimens in different conditions
兩種零件不同條件下氫脆斷裂分析
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