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本文用带有石墨单色器的高精度 x 射线衍射仪(C_u一K_a 辐射)研究了马氏体相变.用(311)_A 和(211)_M 线条测定残余奥氏体,用(002)_M—〔(200)′_M,(020)_M〕线条测定高碳钢的马氏体的碳含量,用(222)_M 线条测定低、中碳钢的马氏体的碳含量.实验结果表明,无论是低碳钢,还是高碳钠,马氏体相变时,均有碳的扩散现象.但是,在低碳钢中碳的扩散要比高碳钢中的大得多,合金元素将减慢这种扩散.
In this paper, martensitic transformation was studied by high-precision X-ray diffractometer with graphite monochromator (C_u_K_a radiation). The residual austenite was measured with (311) _A and (211) _M lines, The carbon content of martensite in high-carbon steel was measured by using the line (M) (200) _M, (020) _M, and the carbon content of martensite in low and medium carbon steels was determined by (222) _M line.The experimental results show that , Whether it is low-carbon steel, or high-carbon sodium, martensitic transformation, there are carbon diffusion phenomenon, but in the low-carbon steel carbon diffusion is much larger than the high-carbon steel, alloying elements will Slow down this proliferation.