檢視脆性断裂的原始碼

[[File:脆性断裂.jpg|缩略图|[https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E8%84%86%E6%80%A7%E6%96%AD%E8%A3%82&step_word=&hs=0&pn=14&spn=0&di=29810&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=424975364%2C4119407532&os=3715856481%2C2549359004&simid=4209722998%2C667157737&adpicid=0&lpn=0&ln=1504&fr=&fmq=1623793271227_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fgss0.baidu.com%2F9vo3dSag_xI4khGko9WTAnF6hhy%2Fzhidao%2Fpic%2Fitem%2F574e9258d109b3defd58958dcdbf6c81810a4c6b.jpg%26refer%3Dhttp%3A%2F%2Fgss0.baidu.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1626385036%26t%3Dab5bf8b0522a9f3c202e05cc01c38553&fromurl=ippr_z2C%24qAzdH3FAzdH3Fzit1w5_z%26e3Bkwt17_z%26e3Bv54AzdH3Fq7jfpt5gAzdH3Fc00ba0n0m_z%26e3Bip4s&gsm=e&rpstart=0&rpnum=0&islist=&querylist=&nojc=undefined 原图链接][https://zhidao.baidu.com/question/577807376.html 来自搜狗知道]]]
'''脆性断裂'''是指构件未经明显的变形而发生的断裂。断裂时材料几乎没有发生过塑性变形。如杆件脆断时没有明显的伸长或弯曲，更无缩颈，容器破裂时没有直径的增大及壁厚的减薄。脆断的构件常形成碎片。材料的脆性是引起构件脆断的重要原因。因构件中存在严重缺陷（如裂纹）发生低应力脆断时也具有脆性断裂的宏观特征，但此时材料不一定很脆。因材料脆性而发生的脆断断口“呈结晶状”，有金属光泽，断口与主应力垂直，也即与构件表面垂直，断口平齐。